ADC UTU-701C, ETU-751C User Manual

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WorldDSL

SER MANUAL

RATE SELECTABLE HDSL LINE AND DESKTOP UNITS

SYNC ALM

HDSL

ALM

I/F

LOC

LPBK

REM

UTU-701C List 1 Universal Termination Unit Part Number: 150-1422-01C

ETU-751C List 1 ETSI Termination Unit

WorldDSL

G.703

I/F

L M

Part Number: 150-1432-01C

700-701-100-02

Revision History of This Manual

To order copies of this manual, use document number 700-701-100-02.

Issue Release Date Revisions Made

1 January 14, 2000 Initial release 2 August 9, 2002 ADC rebrand

Trademark Information

ADC is a registered trademark and WorldDSL is a trademark of ADC Telecommunications, Inc. No right, license, or interest to such trademarks is granted hereunder, and you agree that no such right, license, or interest shall be asserted by you with respect to such trademark.

Other product names mentioned in this document are used for identification purposes only and may be trademarks or registered trademarks of their respective companies.

Disclaimer of Liability

Information contained in this document is company private to ADC DSL Systems, Inc., and shall not be modified, used, copied, reproduced or disclosed in whole or in part without the written consent of ADC.

Contents herein are current as of the date of publication. ADC reserves the right to change the contents without prior notice. In no event shall ADC be liable for any damages resulting from loss of data, loss of use, or loss of profits, and ADC further disclaims any and all liability for indirect, incidental, special, consequential or other similar damages. This disclaimer of liability applies to all products, publications and services during and after the warranty period.

ii August 9, 2002 ETU-701C and ETU-751C List 1

700-701-100-02 Using This Manual

USING THIS MANUAL

The following conventions are used in this manual:

• Monospace type indicates screen text.

• Keys you press are indicated by small icons such as or . Key combinations to be pressed

simultaneously are indicated with a plus sign as follows: + .

Y ENTER

CTRL ESC

• Items you select are in bold.

• Three types of messages, identified by icons, appear in text.

Notes contain information about special circumstances.

Cautions indicate the possibility of personal injury or equipment damage.

The Electrostatic Discharge (ESD) symbol indicate s that a device or as sembly is susc eptible to damage from electrostatic discharge.

For a list of abbreviations used in this document, refer to “Abbreviations” on page 70.

INSPECTING SHIPMENT

Upon receipt of the equipment:

• Unpack each container and inspect the contents for signs of damage. If the equipment has been damaged in

transit, immediately report the extent of damage to the transportation company and to ADC DSL Systems, Inc. Order replacement equipment, if necessary.

• Check the packing list to ensure complete and accurate shipment of each listed item. If the shipment is short

or irregular, contact ADC DSL Systems, Inc. as described in “Product Support” on page 69. If you must store the equipment for a prolonged period, store the equipment in its original container.

ETU-701C and ETU-751C List 1 August 9, 2002 iii

Inspecting Shipment 700-701-100-02

iv August 9, 2002 ETU-701C and ETU-751C List 1

700-701-100-02 Table of Contents

Overview ____________________________________________________________________________ 1

Rate Selectable HDSL Unit Firmware...............................................................................................1

EMU Firmware Compatibility...........................................................................................................2

Application Interface..........................................................................................................................2

HDSL Technology .............................................................................................................................3

Transmission Ranges .........................................................................................................................3

Front and Rear Panel Components.....................................................................................................4

WorldDSL Product Compatibility .....................................................................................................8

Specifications_________________________________________________________________________ 9 Functional Description________________________________________________________________ 11

Major Components...........................................................................................................................11

G.703 Interface..................................................................................................................12

HDSL Interface..................................................................................................................12

System Timing Circuits.....................................................................................................12

Processor............................................................................................................................12

Power Sources ...................................................................................................................13

Rate Selectable Application Modes and Options.............................................................................14

Single Mode.......................................................................................................................14

Structured Mode ................................................................................................................14

Unstructured Mode............................................................................................................16

G.704 Framing and Rate Selectable HDSL.......................................................................17

Hot Swapping...................................................................................................................................17

Performance Monitoring and History..............................................................................................18

Alarms..............................................................................................................................................18

Loopbacks........................................................................................................................................19

BER Testing.....................................................................................................................................21

Inspection, Safety, and Equipment Repair _______________________________________________ 22

Inspection.........................................................................................................................................22

Safety ...............................................................................................................................................22

Equipment Repair ............................................................................................................................22

Installation and Startup_______________________________________________________________ 23

UTU-701C Line Unit Installation....................................................................................................23

ETU-751C Desktop Unit Installation ..............................................................................................24

HDSL Startup and Synchronization.................................................................................................24

ETU-701C and ETU-751C List 1 August 9, 2002 v

Table of Contents 700-701-100-02

System Configuration_________________________________________________________________ 25

Maintenance Terminal Connection .................................................................................................25

Modem Connection ......................................................................................................................... 26

Logging On...................................................................................................................................... 27

Console Screen Structure ................................................................................................................ 28

Reading and Navigating Menus ...................................................................................................... 30

Config Menu Options...................................................................................................................... 32

Configure Terminal Settings............................................................................................. 33

Configure Date and Time.................................................................................................. 34

Change Password.............................................................................................................. 35

Configure Circuit ID......................................................................................................... 36

Configure System Settings................................................................................................ 37

Configure LTU and NTU Interfaces................................................................................. 39

Configure Alarms.............................................................................................................. 41

Set to Factory Defaults.................................................................................................................... 44

Logging Off..................................................................................................................................... 45

Viewing Status_______________________________________________________________________ 46

Main Console Screen....................................................................................................................... 46

Monitor Menu.................................................................................................................................. 48

Monitor LTU Interface Screen.......................................................................................... 49

Monitor NTU Interface Screen ......................................................................................... 50

Monitor HDSL Span 1 Screen .......................................................................................... 51

History Menu................................................................................................................................... 52

LTU and NTU Interface Performance History Screens.................................................... 53

HDSL Span Performance History Screens ....................................................................... 55

Clear History Screens........................................................................................................ 58

Inventory Screen.............................................................................................................................. 58

Testing _____________________________________________________________________________ 60 Firmware Download Utility ____________________________________________________________ 62 Reference Information ________________________________________________________________ 64

ETU-751C Connector Pinouts......................................................................................................... 64

ECA-800 Connector Adapter (DB25M to M34F for V.35)............................................................ 65

ECA-801 Connector Adapter (DB25M to DB15F for X.21).......................................................... 66

ECA-802 Connector Adapter (DB9M to RJ-45)............................................................................. 66

ECA-804 Connector Adapter (DB9M to Four-Position Terminal Block)...................................... 68

Product Support _____________________________________________________________________ 69 Abbreviations _______________________________________________________________________ 70 Certification and Warranty ______________________________________________ Inside Back Cover

vi August 9, 2002 ETU-701C and ETU-751C List 1

700-701-100-02 List of Figures

LIST OF FIGURES

1. Leased Line Data Application on a Single-pair G.703 Network....................................................................3

2. UTU-701C Line Unit Front Panel ..................................................................................................................4

3. ETU-751C Desktop Unit Front Panel.............................................................................................................4

4. ETU-751C Desktop Unit Rear Panel..............................................................................................................7

5. Line and Desktop Unit Functional Block Diagram ......................................................................................11

6. Typical Structured Mode Application...........................................................................................................14

7. Unstructured Mode Application....................................................................................................................16

8. Loopback Operations....................................................................................................................................19

9. Installing the UTU-701C Line Unit..............................................................................................................23

10. UTU/ETU Console Port and Maintenance Terminal Connector Pinouts.....................................................25

11. Connecting a Maintenance Terminal to a Line Unit.....................................................................................26

12. Logon Password Screen................................................................................................................................27

13. Console Screen Menu Bar.............................................................................................................................27

14. Console Screen Menu Structure....................................................................................................................28

15. Items in Console Screen Status Bar..............................................................................................................30

16. Console Screen Config Menu.......................................................................................................................32

17. Config Terminal Settings Menu....................................................................................................................33

18. Config Date and Time Menu ........................................................................................................................34

19. Config Change Password Menu....................................................................................................................35

20. Config Circuit ID Menu................................................................................................................................36

21. Config System Settings Menu.......................................................................................................................37

22. Config LTU Interface Menu with Unstructured Mode Data Rate................................................................39

23. Config NTU Interface Menu with Structured Mode Data Rate....................................................................39

24. Config Alarms Menu ....................................................................................................................................41

25. Config Alarms LTU Interface Menu ............................................................................................................42

26. Config Alarms NTU Interface Menu............................................................................................................42

27. Config Alarms HDSL Span 1 Menu.............................................................................................................43

28. Set to Factory Defaults Screen......................................................................................................................44

29. Main Console Screen ....................................................................................................................................46

30. Monitor Menu ...............................................................................................................................................48

31. Monitor LTU Interface Screen......................................................................................................................49

32. Monitor NTU Interface Screen .....................................................................................................................50

33. Monitor HDSL Span 1 Screen ......................................................................................................................51

34. History Menu ................................................................................................................................................52

35. History LTU Interface Menu ........................................................................................................................53

36. History NTU Interface Menu........................................................................................................................53

ETU-701C and ETU-751C List 1 August 9, 2002 vii

List of Figures 700-701-100-02

37. LTU Interface Alarm History Screen........................................................................................................... 54

38. History HDSL Span 1 Menu ........................................................................................................................ 55

39. 24 Hour History Screen for HDSL Span 1................................................................................................... 55

40. 7 Day History Status Screen for HDSL Span 1............................................................................................ 56

41. Alarm History Status Screen for HDSL Span 1........................................................................................... 57

42. Inventory Screen........................................................................................................................................... 58

43. Test Menu Screen......................................................................................................................................... 60

44. ETSI Firmware Download Utility Menu...................................................................................................... 62

45. ECA-800 DB25M to M34F (V.35) Connector Adapter, Part Number 150-1470-01 .................................. 65

46. ECA-801 D25M to DB15F (X.21) Connector Adapter, Part Number 150-1470-01................................... 66

47. ECA-802 DB9M to RJ-45 Connector Adapter, Part Number 150-1472-01 ................................................ 67

48. ECA-804 DB9M to Four-Position Terminal Block Connector Adapter, Part Number 150-1474-01 ......... 68

viii August 9, 2002 ETU-701C and ETU-751C List 1

700-701-100-02 List of Tables

LIST OF TABLES

1. Rate Selectable G.703 Unit Characteristics....................................................................................................2

2. Transmission Ranges with 0 db ETSI Noise ..................................................................................................3

3. Line and Desktop Unit Front Panel Components ...........................................................................................5

4. Line and Desktop Unit Front Panel LED Indications.....................................................................................6

5. ETU-751C Desktop Unit Rear-Panel Components ........................................................................................7

6. WorldDSL Product Compatibility ..................................................................................................................8

7. Typical Structured Mode System Settings....................................................................................................15

8. Typical Unstructured Mode System Settings................................................................................................16

9. Examples of Selected and Actual HDSL Payload Rates ..............................................................................17

10. Monitored HDSL Transmission and Interface Performance Parameters......................................................18

11. HDSL Transmission and Application Interface Alarms...............................................................................19

12. Loopbacks Selected at Front Panel Pushbuttons and Console Screens ........................................................20

13. Loopback Equivalents...................................................................................................................................21

14. Console Screen Menus..................................................................................................................................29

15. Console Screen Status Bar Displays.............................................................................................................30

16. Console Screen Navigation Keys..................................................................................................................31

17. Config Menu Options and Recommended Order of System Configuration.................................................32

18. Fields and Options Displayed in Config System Settings Menu..................................................................38

19. Fields and Options in Displayed Config LTU and Config NTU Interface Menus.......................................40

20. Fields Displayed in Config Alarms LTU and Config Alarms NTU Interface Menus..................................43

21. Fields Displayed in Config Alarms HDSL Span 1 Menu.............................................................................44

22. Factory Default System Settings...................................................................................................................45

23. Reading the Main Console Screen................................................................................................................46

24. Fields Displayed in Main Console Screen....................................................................................................47

25. Fields Displayed in Monitor LTU and Monitor NTU Interface Screens......................................................49

26. Fields in Monitor HDSL Span 1 Screen .......................................................................................................51

27. LTU Interface and NTU Interface Alarm History Data................................................................................54

28. HDSL Span Alarm History Data ..................................................................................................................57

29. Inventory Screen Data...................................................................................................................................59

30. Test Menu Options........................................................................................................................................61

31. BER Section of Test Menu ...........................................................................................................................61

32. ETSI Firmware User Selectable Download Menu Options..........................................................................63

33. Navigating the ETSI Firmware Download Menu.........................................................................................63

34. D9F HDSL Line Connector Pinouts.............................................................................................................64

35. D25F Data Port Connector Pinouts...............................................................................................................64

36. ECA-800 DB25M to M34F (V.35) Connector Adapter Pinouts ..................................................................65

ETU-701C and ETU-751C List 1 August 9, 2002 ix

List of Tables 700-701-100-02

37. ECA-801 DB25M to DB15F (X.21) Connector Adapter Pinouts................................................................ 66

38. ECA-802 DB9M to RJ-45 Connector Adapter Pinouts ............................................................................... 67

39. ECA-804 DB9M to Four-Position Terminal Block Connector Adapter Pinouts......................................... 68

x August 9, 2002 ETU-701C and ETU-751C List 1

700-701-100-02 Overview

OVERVIEW

ADC® WorldDSL™ offers High-bit-rate Digital Subscriber Line (HDSL) Line Termination Units (LTUs), Network Termination Units (NTUs), Universal Termination Units (UTUs), and ETSI Termination Units (ETUs). The units are shelf and enclosure mounted, providing full-duplex transmission of up to 2.048 Mbps data over one or two twisted pairs of copper wire. Public carriers and private network providers can use these units to offer low-cost service with fiber-optic quality using the local copper loop without installing repeaters or conditioning the outside plant. The units are used in systems that comply with European Telecommunication Standards Institute (ETSI) specification TS 101 135.

This practice describes the WorldDSL RS UTU-701C List 1 and ETU-751C List 1 Rate Selectable HDSL line and desktop units. The terms for these units are defined as follows:

• LTU and NTU are defined by ETSI to distinguish between the two units in an HDSL system. An LTU is

generally located at the Exchange Office end of the circuit and acts as the master unit. The NTU is located at the customer site and acts as the slave unit.

• UTU is defined by ADC. These are programmable HDSL line units that can be configured as an

LTU (master) or an NTU (slave). The UTU default configuration is NTU (slave). The UTUs do not provide line power to other HDSL units. All other aspects of UTU functionality are identical to LTUs or NTUs. The UTU-701C has a G.703 interface and must be locally powered from a -36 Vdc to -72 Vdc power supply.

• ETU is defined by ADC. These are programmable HDSL line units housed in plastic enclosures with interface

and power connectors for convenient use as integrated desktop units. The ETUs can be configured as an LTU or an NTU. The ETU default configuration is NTU. The ETU-751C does not provide or receive line power; it must be locally powered. All other aspects of ETU functionality are identical to LTUs or NTUs. The ETU-751C has a G.703 interface and contains a power supply that accepts 100 to 240 volt, 50 or 60 Hz, AC power.

• WorldDSL RS (rate selectable) is defined by ADC. WorldDSL RS is a single pair High-bit-rate Digital

Subscriber Line (HDSL) solution that offers extended reach capabilities through the use of industry-leading multi-rate DSL technology. The UTU-701C and ETU-751C deploy HDSL in networks using a single pair of copper wire running at speeds between 256 kbps and 2048 kbps. The HDSL payload rates are menu selected in time slot increments of 64 kbps, ranging from 256 kbps to 2048 kbps. Transmission ranges vary according to the rate selected. Depending on noise environment, ranges of up to 7.1 km (4.4 miles) are possible at the lowest-selectable HDSL payload rate (256 kbps) using 0.51 mm wire. Longer ranges are possible with larger wire.

• These HDSL units are configured as Data Communications Equipment (DCE) and respond to data, clock, and

control signals from Data Terminal Equipment (DTE).

Use of this product in a manner other than defined in this technical practice may cause equipment damage or injury to personnel.

Gebrauch dieses Produkts in einer Weise anders als defin iert kann in dieser techn ischen Praxis Geräte Schaden oder Verletzung zu Personal verursachen.

RATE SELECTABLE HDSL UNIT FIRMWARE

Version 4.01 is the current release for the rate selectable HDSL unit firmware. This firmware must be installed at each end of the circuit (that is, in both the LTU and NTU).

WorldDSL RS units are not backward compatible with standard HDSL or management unit firmware. The installed firmware must be that designed for RS units.

RS G.703 LTUs can communicate with RS Nx64k NTUs, but only if HDSL unit firmware Version 4.01 or later is installed at each end of the circuit.

UTU-701 and ETU-751 List 1 August 9, 2002 1

Overview 700-701-100-02

EMU FIRMWARE COMPATIBILITY

The EMU-830 Management Unit firmware must be Version 3.22.08 or later to support rate selectable HDSL units.

APPLICATION INTERFACE

The UTU-701C and ETU-751C provide G.703 interface ports with a rate selectable HDSL payload. The only application mode is Single, indicating single pair.

The G.703 E1 application interface conforms with the ITU-T G.703 physical specification and can be configured for an impedance of 75 Ω unbalanced or 120 Ω balanced. User data can be unstructured or structured according to the G.704 framing standard, and optionally CRC-4 multiframed according to the G.706 standard. Structured mode is automatically invoked when 1 to 29 time slots are selected. Unstructured mode is invoked when 30, 31, or 32 time slots are selected.

The exchange office data terminal equipment (DTE) allocates the 2048 kbps E1 payload to the G.703 port in time-slot increments of 64 kbps each. The number of G.703 time slots allocated by the DTE is determined by the selected HDSL payload rate (the DTE and HDSL payloads must be set to the same rate). Time slots not allocated to the G.703 port are replaced by idle codes at the G.703 output.

The UTU-701C and ETU-751C have HDSL payload rates ranging from 256 kbps to 2048 kbps. The desired HDSL payload rate is selected in time slot increments of 64 kbps from the system settings menu of the LTU-configured unit. The selected payload rate applies to both the receive and transmit directions. The LTU-configured unit automatically configures the NTU-configured unit for the same payload rate. Table 1 lists the characteristics of the rate selectable G.703 line and desktop units covered in this practice.

Table 1. Rate Selectable G.703 Unit Characteristics

User Selected

Model Interface

UTU-701C G.703 64 to 2048 256 to 2048 Yes ETU-751C G.703 64 to 2048 256 to 2048 Yes

HDSL Payload

Rates (kbps)

Actual

HDSL Payload

Rates (kbps)

LTU/NTU

Configurable

The G.703 units always transmit time slots 0 and 16, which results in 128 kbps being added to the user-selected HDSL payload rate (when 1 to 30 time slots are selected). For example, the lowest-selectable HDSL rates, 64 and 128 kbps, are transmitted at 256 kbps. This 128 kbps increase in payload rate, however, does not affect the rate of the G.703 data received at the customer or network DTE.

Figure 1 shows a single-pair, leased-line data application using 4 time slots for a 256 kbps HDSL payload rate.

Customer data is input to the remote G.703 port at the 256 kbps rate, transported over the HDSL loop at an increased 384 kbps rate, and received by the exchange office DTE at the original 256 kbps rate. For more information, see “Rate Selectable Application Modes and Options” on page 14 and “G.704 Framing and Rate

Selectable HDSL” on page 17.

2 August 9, 2002 UTU-701 and ETU-751 List 1

700-701-100-02 Overview

Customer Side

G.703

4 Time Slots

(256 kbps)

Customer

DTE

Exchange

Office

DTE

Network Side

4 Time Slots

(256 kbps)

UTU-701

(LTU)

G.703

HDSL

Single Pair HDSL loop

Time Slots 1 through 4

+Time Slots 0 and 16

(384 kbps)

UTU-701

(NTU)

HDSL

Figure 1. Leased Line Data Application on a Single-pair G.703 Network

HDSL TECHNOLOGY

HDSL is the core technology for ADC’s WorldDSL line of LTUs, UTUs, and ETUs. Rate selectable HDSL enables these units to transmit and receive digital data at various rates over various distances on one twisted pair of copper wire. Both outbound and inbound signals are delivered on the same pair of wires by using echo cancellation techniques. The transmitted signal is canceled at the receiver by precisely predicting the amount of signal echo, then subtracting it from the overall input signal. ADC’s market leading HDSL-based products tolerate crosstalk, and operate not only on continuous unobstructed pairs of wires, but also on cables with mixed wire gauges and bridged taps.

TRANSMISSION RANGES

Transmission ranges assume the presence of noise according to the ETSI model described in TS 101 135. The expected Bit Error Rate (BER) using this model is 1x10 at the various HDSL line rates over one twisted-pair of 0.4 mm and 0.51 mm copper wire are listed in Table 2. The no noise transmission ranges are listed in “Specifications” on page 9.

Table 2. Transmission Ranges with 0 db ETSI Noise

RS G.703 HDSL Payload Rate Wire Size and Transmission Range (with 0 dB ETSI Noise)

User Selected

HDSL Payload

Rate (kbps)

64/128 256 4.1 km (13,451 ft.) 5.1 km (16,730 ft.)

256 384 3.6 km (11,811 ft.) 4.7 km (15,420 ft.)

384 512 3.4 km (11,155 ft.) 4.5 km (14,760 ft.)

640 768 3.0 km (9,842 ft.) 4.2 km (13,779 ft.)

1024 1152 2.6 km (8,530 ft.) 3.4 km (11,155 ft.) 1408 1536 2.2 km (7,218 ft.) 2.9 km (9,515 ft.)

1920/1984/2048 2048

(a) See “G.704 Framing and Rate Selectable HDSL” on page 17. (b) System operates in unstructured mode when 32 time slots are selected. (b) The maximum no-noise transmission range is approximately 7.1 km (4.4 miles). See “Specifications” on page 9.

Actual

HDSL Payload

Rate (kbps)

(a)

(b)

0.4mm (26 AWG)

Single Twisted-Pair

2.0 km (6,562 ft.) 2.4 km (7,874 ft.)

-7

. The transmission ranges in such a noise environment

‘

0.51mm (24 AWG) Single

Copper Wire

Twisted-Pair Copper Wire

UTU-701 and ETU-751 List 1 August 9, 2002 3

Overview 700-701-100-02

FRONT AND REAR PANEL COMPONENTS

The line and desktop unit front panels are shown in Figure 2 and Figure 3, respectively. The components on these panels are described in Table 3 on page 5 and in Table 4 on page 6.

The ETU-751C desktop unit rear panel is shown in Figure 4 on page 7. The components on this panel are described in Table 5 on page 7. The pinouts for the desktop unit rear panel connectors are listed in Table 34 and

Table 35 on page 64.

SYNC

HDSL

I/F ALM LED

Bar code label

(located on circuit

side of line card)

ALM

I/F

LOC

LPBK

REM

HDSL LEDs

Loopback LEDs and push buttons

WorldDSL

G.703

Figure 2. UTU-701C Line Unit Front Panel

HDSL LEDs

HDSL

ALM

SYNC

Loopback LEDs and push buttons

I/F

LOC

ALM

UTU-701

G.703

LPBK

V.24 (RS-232) console port

Warranty control number label

V.24 (RS-232) console port

REM

V.24

HDSL

ALM LEDI/F

Unit ID and bar code labels (located on bottom of unit)

Figure 3. ETU-751C Desktop Unit Front Panel

4 August 9, 2002 UTU-701 and ETU-751 List 1

700-701-100-02 Overview

Table 3. Line and Desktop Unit Front Panel Components

Name Function

HDSL SYNC LED Displays synchronization state for the HDSL loop. HDSL ALM LED Displays alarm state for the HDSL loop. I/F ALM LED Displays alarm state for the G.703 data port. LOC LPBK LED Displays local (LOC) loopback state. LOC LPBK Button Activates the local HDSL analog loopback. REM LPBK LED Displays remote (REM) loopback state. REM LPBK Button Activates the remote interface loopback. V.24 (RS-232) console

port

Bar code label (all units) Contains the serial number and part number of the unit, as indicated in both bar code and text format.

Warranty control number label (UTU-701C)

Unit ID label (ETU-751C) Identifies the model number, manufacturer, part number, and input voltage range of the ETU. Includes

Provides bi-directional communication between the unit and an external maintenance terminal through a V.24 (RS-232C) interface to allow configuration and performance monitoring through the console screen menus as described in “System Configuration” on page 25. This connector can also be used to download new firmware to the line unit’s flash memory as described in “Firmware Download Utility” on

page 62. This port is configured as DCE (see “Maintenance Terminal Connection” on page 25 for

pinouts).

Also contains the configuration number of the unit, as indicated by "CFG: Rnn," where nn is the configuration number. For example, CFG: R07 would indicate configuration number 07.

Indicates the beginning year and month of the line card warranty. Also indicates the line card revision number. For example, a warranty control number of "803R07" would indicate a warranty beginning in the year 1998 (8), during the month of March (03), and line card revision number R07.

the CE mark, certifying that the unit is in compliance with directive EN300 386-2. See “Certification and

Warranty” on the inside of the back cover.

UTU-701 and ETU-751 List 1 August 9, 2002 5

Overview 700-701-100-02

Table 4 defines the system states indicated by the front panel LEDs. When power is applied to the unit, one of the

LEDs listed in Table 4 will always be on.

Table 4. Line and Desktop Unit Front Panel LED Indications

LED Mode Description

HDSL SYNC LED Steady green

Slow blinking Off

HDSL ALM LED Steady red

HDSL loop is ready to transmit and receive data across all spans. HDSL loop acquisition is in progress for local span. HDSL loop is not configured.

Loss of sync word (LOSW); or the margin is below the set margin alarm threshold; or Errored Seconds (ES) count is above

threshold on any span. Pulsing red Off

Pulses for every ES on any span.

Normal transmit or receive data is in progress.

I/F ALM LED Steady red Loss of Signal (LOS) alarm due to loss of G.703 signal or Loss of

Clock (LOC) alarm due t

o loss of external clock (when using EXT

timing).

LPBK LEDs

(a)

LOC REM

Steady yellow Off Local HDSL analog loopback is active. Off Off No loopbacks are active. Blinking yellow Off Local interface loopback is active. Off Steady yellow Remote loopback is active. Blinking yellow Blinking yellow A loopback away from the local equipment is active.

(a) The LOC and REM LPBK LEDs are read in unison.

6 August 9, 2002 UTU-701 and ETU-751 List 1

700-701-100-02 Overview

Figure 4. ETU-751C Desktop Unit Rear Panel

Table 5. ETU-751C Desktop Unit Rear-Panel Components

Item Description

D15F 120Ω G.703

Connects E1 balanced 120 Ω circuits to the enclosure.

connector BNC 75Ω In/Out G.703

Connects E1 unbalanced 75 Ω circuits to the enclosure.

connectors D9F HDSL line connector Connects the HDSL pair to the enclosure. On/Off switch Rocker switch that allows you to turn the externally applied AC power on or off. Power cord receptacle Accepts female end of three-prong power cord supplying 100-240 Vac at 50-60 Hz.

UTU-701 and ETU-751 List 1 August 9, 2002 7

Overview 700-701-100-02

WORLDDSL PRODUCT COMPATIBILITY

The line and desktop units are compatible with the WorldDSL products listed in Table 6.

Table 6. WorldDSL Product Compatibility

Model Description Part Number

Rate-Selectable HDSL Units

UTU-702C Rate-selectable HDSL Line Unit, Nx64k Serial Data Interface,

150-1422-02C

128 to 2048 kbps HDSL Line Rate

UTU-712C Rate-selectable HDSL Line Unit, Nx64k Serial Data Interface,

150-1422-12C

128 to 768 kbps HDSL Line Rate

UTU-722C Rate-selectable HDSL Line Unit, Nx64k Serial Data Interface,

150-1422-22C

128 to 256 kbps HDSL Line Rate

ETU-752C Rate-selectable HDSL Desktop Unit, Nx64k Serial Data Interface,

150-1432-02C

128 to 2048 kbps HDSL Line Rate

ETU-762C Rate-selectable HDSL Desktop Unit, Nx64k Serial Data Interface,

150-1432-12C

128 to 768 kbps HDSL Line Rate

ETU-772C Rate-selectable HDSL Desktop Unit, Nx64k Serial Data Interface,

150-1432-22C

128 to 256 kbps HDSL Line Rate

Shelves and Enclosures for UTU-701C

EMS-830 List 1 EMS-830 List 2 ERE-811

(a)

Exchange office management shelf, rear connector access 150-1400-01

(b)

Exchange office management shelf, rear connector access 150-1400-11

(c)

Single-slot remote enclosure with internal AC power supply 150-1411-1x

Connector Adapters for ETU-751C

(d)

ECA-800 D25M to M34F connector adapter (V.35) 150-1470-01 ECA-801 D25M to D15F connector adapter (X.21) 150-1471-01 ECA-802 DB9M to RJ-45 connector adapter (HDSL) 150-1472-01 ECA-804 DB9M to 4-position terminal block connector (HDSL) 150-1474-01 ECA-807 DB25M to DB37F connector adapter (RS-449) 150-1477-01

(a) The EMS-830 List 1 supports protection switching, the EMS-830 List 2 does not. (b) The EMS-830 List 2 is CE marked. The EMS-830 List 1 is not, and is intended for use in applications

where the CE Mark is not required. (c) The UTU-701C is CE Marked in the ERE-811 List 5 remote enclosure only. (d) The ECA-80x series of connector adapters and their pinouts are listed in Table 36 through Table 39,

beginning on page 65.

8 August 9, 2002 UTU-701 and ETU-751 List 1

700-701-100-02 Specifications

SPECIFICATIONS

HDSL Interface

Line Code 2B1Q Line Rate (selectable in increments of 64 kbps) Up to 2048 kbps Protection K.20, K.21 Compliance TS 101 135 Transmission Ranges (± 200 m):

Transmission Ranges with 0 dB ETSI Noise Transmission Ranges with No Noise

HDSL Line Rate (kbps)

256 4.1 km (13,451 ft.) 5.1 km (16,730 ft.) 5.3 km (17,388 ft.) 7.1 km (23,294 ft.) 384 3.6 km (11,811 ft.) 4.7 km (15,420 ft.) 4.7 km (15,420 ft.) 6.7 km (21,982 ft.) 512 3.4 km (11,155 ft.) 4.5 km (14,760 ft.) 4.6 km (15,092 ft.) 6.3 km (20,669 ft.)

768 3.0 km (9,842 ft.) 4.2 km (13,779 ft.) 4.3 km (14,108 ft.) 5.9 km (19,357 ft.) 1152 2.6 km (8,530 ft.) 3.4 km (11,155 ft.) 3.7 km (12,139 ft.) 5.3 km (17,388 ft.) 1536 2.2 km (7,218 ft.) 2.9 km (9,515 ft.) 3.3 km (10,827 ft.) 4.7 km (15,420 ft.) 2048 2.0 km (6,562 ft.) 2.4 km (7,874 ft.) 3.0 km (9,842 ft.) 3.2 km (10,499 ft.)

0.4 mm (26 AWG)

Single Twisted-Pair

Copper Wire

0.51 mm (24 AWG) Single Twisted-Pair

Copper Wire

0.4 mm (26 AWG)

Single Twisted-Pair

Copper Wire

0.51 mm (24 AWG) Single Twisted-Pair

Copper Wire

G.703 Interface

Unstructured Leased Line 2.048 Mbps per ETS 300 247 (D2048U) Structured Leased Line 2.048 Mbps per ETS 300 419 (D2048S) Fractional E1 User-selectable DS0 blocking, with user-programmable idle code Line Code HDB3 Line Rate 2.048 Mbps Impedance (jumper selectable) 120 Ω balanced (twisted-pair)

75 Ω unbalanced (coax)

CRC-4 mode User-selectable CRC-4 detection and generation Compliance ITU-T G.703, G.704, G.706, G.821, G.823, CTR 12

Timing

Clock Source G.703 input

External 2.048 MHz clock (per G.703 par. 10)

Internal Oscillator 2.048 MHz ± 50 ppm

Performance Monitoring and Diagnostics

HDSL Noise margin, pulse attenuation, ES, UAS G.703 Interface ES, SES, UAS per G.821. CRC-4 errored seconds, BPV seconds Major Alarm Relay Form-C relay contacts (NO, NC, C). Fail-safe operation Loopbacks Local interface loopback, local HDSL loopback (V.54 loop 3),

remote loopback (V.54 loop 2)

UTU-701 and ETU-751 List 1 August 9, 2002 9

Specifications 700-701-100-02

Alarms

Can be individually set to Disabled, Minor, or Major (major alarms actuate the LTU or NTU alarm relay) E1 Interface Loss of Signal (LOS)

Loss of Framing (LFA) Alarm Indication Signal (AIS)

Remote Alarm Indication (RAI) External Clock Loss of Clock (LOC) HDSL Loop Margin, programmable threshold (MAR)

Errored Seconds, programmable threshold (ES)

Loss of Sync Word (LOSW)

History

E1 and HDSL Interface 24-Hour (15-minute intervals) and 7-Day (24-hour intervals) for

ES and UAS Alarm Time stamp of first and last occurrence, number of occurrences for

all enabled alarms

Power Requirements

UTU-701C

Local input voltage -36 Vdc to -72 Vdc (see note at bottom of page) Consumption (typical) 4.5 W

ETU-751C

Local input voltage 100 to 240 volt, 50 or 60 Hz, AC power Consumption (typical) 4.5 W

Environmental

Operating Temperature Range 0 °C to +50 °C (32 °F to 122 °F) Humidity Up to 95% non-condensing Storage Temperature -40 °C to +70 ° C (-40 °F to 158 °F) Storage Humidity 5% to 95% non-condensing

Regulatory Approvals

CE Mark Certification EN300 386-2

10 August 9, 2002 UTU-701 and ETU-751 List 1

700-701-100-02 Functional Description

FUNCTIONAL DESCRIPTION

This section provides a functional description of the line and desktop units, including major components, single-pair application mode, alarms, and testing (including monitoring and loopbacks).

MAJOR COMPONENTS

The major components of the line and desktop units include:

• G.703 interface (75 or 120 Ω)

• rate selectable HDSL interface (including framing, transceiver, and line interface circuits)

• system timing circuits

• processor

Figure 5 is a functional block diagram of the line and desktop units.

75 and 120

DTE Interface

Ext. clock

from management

unit (UTU-701 only)

Alarm relay

(UTU-701 only)

Management unit

backplane interface

(UTU-701 only)

RS-232

console port

Ω

100-240V

50/60 Hz

AC power

(ETU-751)

Interface

G.703

On-board

power supply

module

+5V, +3.3V

-36V to -72V DC power

(UTU-701)

HDSL framer

Timing circuits

Transceiver

Processor

Line interface

Control Status

Front panel control and

console interface

HDSL loop

Figure 5. Line and Desktop Unit Functional Block Diagram

UTU-701 and ETU-751 List 1 August 9, 2002 11

Functional Description 700-701-100-02

G.703 Interface

The G.703 interface performs the following functions:

• provides a jumper-selectable 75 or 120 Ω DTE interface (see “Installation and Startup” on page 23 for jumper

locations)

• allocates full or fractional portion of the total 2048 kbps bandwidth to and from the G.703 interface

• frames data according to G.704

• inserts an idle code into unused time slots at the G.703 output

• recovers timing from the received G.703 signal

• monitors multiframe CRC-4 errors in the received G.703 signal

• regenerates multiframe (CRC-4) code at the G.703 output

• regenerates time slot 0 at the G.703 output

• transports time slot 16 transparently between G.703 ports

The G.703 interface operates in the structured application mode when less than 32 time slots are selected and in the unstructured mode when 32 time slots are selected (see “System Configuration” on page 25). These modes are described in detail in the “Rate Selectable Application Modes and Options” on page 14.

HDSL Interface

The HDSL interface includes the HDSL framer, which performs HDSL multiplexing and demultiplexing; a firmware-controlled programmable clock, which sets the HDSL line rate at the interface output; and the transceiver and line-interface circuits for the single HDSL pair.

In the transmit direction, the HDSL framer accepts inputs from the G.703 data port as shown in Figure 5. The data is placed on the HDSL pair along with the HDSL overhead bits for presentation to the transceiver. A clock representing the selected HDSL line rate is introduced to the transceiver, which outputs data on the single-pair HDSL line. In the receive direction, overhead bits are stripped and processed, and time slots are output to the G.703 interface.

Reversals of Tip and Ring wires are automatically detected and accommodated. The Monitor HDSL Span screen indicates if the Tip and Ring wires are reversed.

System Timing Circuits

The UTU and ETU units can synchronize to any one of the following timing sources:

• G.703: Timing recovered from G.703 input signal

• EXT: External 2.048 MHz reference (available only for UTUs in a shelf with a management unit installed)

Processor

This device runs a program which in real-time:

• monitors the HDSL framer performance

• responds to user requests

• maintains a history of system performance

12 August 9, 2002 UTU-701 and ETU-751 List 1

700-701-100-02 Functional Description

Power Sour ces

The line and desktop units receive power from the following sources:

• A shelf-mounted UTU-701C receives power from a local source of -36 Vdc to -72 Vdc.

• An enclosure mounted UTU-701C receives power from a local source of -36 Vdc to -72 Vdc or from the

enclosure’s built-in AC-to-DC power supply (when provided).

• The ETU-751C desktop unit receives power from a source of 100 to 240 volt, 50 or 60 Hz, AC power.

Input voltage for the UTU-701C line unit (nominal -48 Vdc, tolerance -36 to -72 Vdc) must be supplied by an isolated DC sour ce that complies with TNV or earthed SELV requirements of the latest version of IEC 950.

The single-pair rate selectable HDSL units (local and remote) must be locally powered.

UTU-701 and ETU-751 List 1 August 9, 2002 13

Functional Description 700-701-100-02

RATE SELECTABLE APPLICATION MODES AND OPTIONS

Applications for single-pair rate-selectable HDSL are those that require transport of voice and data at various rates over various distances on a single pair of wires. Depending on line noise and the HDSL rate selected, spans of up to 7.1 km time slots selected. The UTU-701C and ETU-751C each have 32 time slots with a bandwidth of from 256 kbps to 2048 kbps (1 to 32 time slots selected). Each time slot represents a 64 kbps increment of the available bandwidth.

The available rate selectable application modes and options are:

• single

• structured

• unstructured

• CRC-4

Single Mode

Single is the only application mode displayed in the Config System Settings menu. It means the system uses a single pair of twisted copper wires to transport data.

(4.4 miles) can be deployed without the use of doublers. The HDSL line rate depends on the number of

Structured Mode

When less than 32 time slots are selected, the line and desktop units automatically operate in the structured mode (see “G.704 Framing and Rate Selectable HDSL” on page 17). There is no structured mode menu selection. In structured mode, data at the G.703 interface is framed according to G.704. This permits fractional allocation of the total 2048 kbps bandwidth to and from the G.703 interface, insertion of idle code into unused time slots at the G.703 output, and monitoring of the G.703 input for CRC-4 multiframe errors.

A typical structured mode application is illustrated in Figure 6. The settings for this application are listed in

Table 7. Time slots 1-15 and 17-25 are transported as telephony voice channels between the G.703 ports of the

two units. Time slots 26-31 are unused and are set to idle code FF. In structured mode, time slot 1 is the beginning time slot; time slot 0 is regenerated at the G.703 output. With the CRC-4 mode enabled, the input G.703 signal is monitored for CRC-4 multiframe errors and at the G.703 output, a new CRC-4 code is generated. Time slot 16 is transported transparently between G.703 ports and may be used for telephony signaling.

Figure 6. Typical Structured Mode Application

14 August 9, 2002 UTU-701 and ETU-751 List 1

700-701-100-02 Functional Description

Table 7. Typical Structured Mode System Settings

Options Setting

Application Mode <32 TS (Structured)

LTU Interface

Primary Timing Source G.703 G.703 Port

CRC-4 Mode Enabled Idle Code FF Data Rate / # of TSs 1536 kbps / 24 Beginning TS 1

NTU Interface

Primary Timing Source G.703 G.703 Port

CRC-4 Mode Enabled Idle Code FF Data Rate / # of TSs 1536 kbps / 24 Beginning TS 1

For applications requiring fractional use of the G.703 port, embedded generation and detection of CRC-4 information, and A-bit insertion, select less than 32 time slots to invoke the structured mode. In the structured mode time slot 0 is regenerated according to G.704 at the output of the G.703 interface port. The following values apply:

• The Sa bits are always set to 1.

• The A bit is normally set to 0 at the G.703 output port. It is set to 1 during an active Loss of Signal (LOS),

Alarm Indicating Signal (AIS), or a Loss of Frame Alignment (LFA) condition, if the alarm associated with the respective condition is not disabled (see “Configure LTU and NTU Interfaces” on page 39).

• When CRC-4 mode is disabled, the Si bit is transparently transmitted (that is, unmodified from the HDSL

input data stream).

• When CRC-4 mode is enabled, the Si bit is set to a new CRC-4 multiframe signal and checksum (according

to G.706).

• The E-bits are nominally set to 1 and set to 0 for each error in the incoming CRC-4 sub-multiframe.

Match the CRC-4 mode at each interface to the actual type of data present at that node in the system. Otherwise CRC-4 data will not Also, non-CRC-4 data generates an LFA alarm in CRC-4 enabled mode.

be transparently transmitted in CRC-4 disabled mode.

UTU-701 and ETU-751 List 1 August 9, 2002 15

Functional Description 700-701-100-02

Unstructured Mode

When 32 time slots are selected, the line and desktop units automatically operate in the unstructured mode (see

“G.704 Framing and Rate Selectable HDSL” on page 17). There is no unstructured menu selection.

In the unstructured mode:

• There is no G.704 framing.

• Time slot 0 is the beginning time slot, and the data rate is fixed at 2048 kbps.

• A transparent transmission channel is provided between the local and remote units.

• CRC-4 detection and generation are not available, and E1 alarms are limited.

Any framing, multiframing, and common-channel signals can be transmitted through the HDSL line units in the unstructured mode, but the units do not monitor for a loss of framing condition.

Table 8 lists system settings for 2048 kbps transport of data between a DTE connected to an UTU-701C and a

DTE connected to an ETU-751C. The settings in Table 8 use the G.703 signal from the UTU-side DTE as the primary timing source. Timing at the ETU side is recovered from the received G.703 signal. This application is illustrated in Figure 7.

Table 8 . Typical Unstructured Mode System Settings

Options Setting

Exchange

Office

DTE

Application Mode 32 TS (Unstructured)

Primary Timing Source G.703

G. 703 Port

Primary Timing Source G.703

Data Rate / # of TSs 2048 / 32 TSs

Beginning TS 0

Network Side

Time Slots

UTU-701C (LTU) Interface

CRC Mode N/A

Idle Code FF

Data Rate/# of TSs 2048 / 32 TSs

Beginning TS 0

ETU-751C (NTU) Interface

UTU-701

(LTU)

HDSL

G.703

Single Pair HDSL loop

HDSL

Time Slots

(2048 kbps)

ETU-751

(NTU)

G.703

Customer Side

Time Slots

(2048 kbps)(2048 kbps)

Customer

DTE

Figure 7. Unstructured Mode Application

16 August 9, 2002 UTU-701 and ETU-751 List 1

700-701-100-02 Functional Description

G.704 Framing and Rate Selectable HDSL

Time slots 0 and 16 are always transported in accordance with the G.704 framing standard. Although not used by G.703 to transport data, the rate-selectable HDSL interface treats time slots 0 and 16 as a 128 kbps increase in the HDSL payload rate. For example, when 4 time slots are selected (256 kbps), time slots 0 and 16 are transported along with the selected time slots, 1 though 4. This results in an HDSL payload rate of 384 kbps (that is, 256 kbps plus the 128 kbps added by time slots 0 and 16). Table 9 lists several examples of selected and actual HDSL payload rates.

In structured mode, time slots 0 and 16 do not contain data and are transparent to the G.703 input. The transmitted G.703 data arrives at both the customer and network DTE at the selected HDSL payload rate. This is illustrated in Figure 6 on page 14.

Table 9. Examples of Selected and Actual HDSL Payload Rates

Selected HDSL Payload Rate (kbps) / Number of

Time Slots

64 / 1 1 (plus 0 and 16) 256 128 / 2 1 and 2 (plus 0 and16) 256 192 / 3 1 through 3 (plus 0 and16) 320 256 / 4 1 through 4 (plus 0 and16) 384 384 / 6 1 through 6 (plus 0 and16) 512 512 / 8 1 through 8 (plus 0 and16) 640

640 / 10 1 through 10 (plus 0 and16) 768 768 / 12 1 through 12 (plus 0 and16) 896

896 / 14 1 through 14 (plus 0 and16) 1024 1024 / 16 1 through 15 and 17 (plus 0 and16) 1152 1152 / 18 1 through 15, 17 through 19 (plus 0 and16) 1280 1536 / 24 1 through 15, 17 through 25 (plus 0 and 16) 1664 1920 / 30 1 through 15, 17 through 31 (plus 0 and 16) 2048 1984 / 31 1 through 31 (plus 0) 2048 2048 / 32 0 through 31

(a) The line and desktop units operate in the unstructured mode when 32 time slots are selected.

G.703 Time Slots Transported

(a)

Actual HDSL Payload

Rate (kbps)

2048

HOT SWAPPING

UTUs can be inserted and removed from any compatible shelf or enclosure with the power turned on. This will not cause damage to the units nor will it cause interference to any other HDSL circuits that are operating within the same shelf or enclosure.

UTU-701 and ETU-751 List 1 August 9, 2002 17

Functional Description 700-701-100-02

PERFORMANCE MONITORING AND HISTORY

The UTU and ETU units provide extensive real time, non-disruptive monitoring of HDSL transmission performance parameters for all units in a circuit. Performance of the user interface ports is also monitored. Current cumulative counts of the past 24 hours and historical data in the form of 24-hour history (in 15-minute increments) and a 7-day history (in 24-hour increments) are available to assist in identifying problem sources during troubleshooting. See “Viewing Status” on page 46 for information on performance screens.

The monitored parameters are described in Table 10.

Table 10. Monitored HDSL Transmission and Interface Performance Parameters

Monitored Parameter Description

HDSL Noise Margin A measure of the ratio of signal power to noise power, in decibels (dB), at a receiver point. A value

HDSL CRC-6 A six-bit word in every HDSL frame, representing a calculation based on all the bits in that frame. Any

HDSL Loss of Sync Word (LOSW)

Based on the monitored parameters, the LTU and NTU units derive the following performance parameters: HDSL Errored Second (ES) An interval of one second during which at least one CRC-6 error is detected at the incoming HDSL

HDSL Unavailable Second (UAS)

of 0 dB means that the predicted transmission BER is equal to 10 predicted transmission BER is equal to 10 margin value.

mismatch at the receiver, between the received CRC-6 and the one calculated, based on the received data in the frame, indicates that one or more bits were received in error. The units use this parameter to derive HDSL Errored Seconds (ES).

The unit has detected an error in one or more bits in six consecutive HDSL sync words. TS 101 135 requires two consecutive sync words to be received without error to clear this condition. A LOSW condition generally indicates the loop is down, thus data cannot be transmitted.

port or there is an LOSW condition. A second during which a loop is down.

–10

. The Main menu status display continuously updates the

–7

. A value of 6 dB means the

ALARMS

The UTU and ETU units generate alarms for problem conditions on the HDSL transmission facility and at the local application interface. Alarms can be individually enabled or disabled as well as configured as a Major or Minor alarms. See “System Configuration” on page 25 to configure alarms. See “Viewing Status” on page 46 to view alarm conditions.

The HDSL transmission and application interface alarms are described in Table 11 on page 19.

18 August 9, 2002 UTU-701 and ETU-751 List 1

700-701-100-02 Functional Description

Table 11. HDSL Transmission and Application Interface Alarms

Alarm Description

HDSL Alarms HDSL alarms include:

Margin (MAR) Margin has fallen below threshold set for the HDSL interface. Errored Seconds (ES) Errored seconds count has exceeded threshold set for the HDSL interface. Loss of Sync Word

(LOSW)

G.703 Alarms G.703 alarms include:

Loss of Signal (LOS) Loss of signal at the G.703 input. Loss of Frame Alignment

(LFA) Receive Alarm Indication

Signal (AIS) Remote Alarm Indication

Signal (RAI) Loss of Clock (LOC) Applies to loss of external clock when EXT timing is used. The external clock was lost for the

Loss of sync word at the HDSL interface. Remains active during restart, but not a cold start.

Loss of frame alignment at the G.703 input.

Alarm indication signal (unframed all ones) received at the G.703 input.

Remote alarm indication signal received at the G.703 input (through A-bit).

previous second. This alarm is reset when the clock is active again.

LOOPBACKS

An HDSL system maintains several diagnostic loopback configurations, both toward and away from the local unit, which can be used to verify proper transmission of test data through the local unit, the HDSL facility, and the remote unit. Figure 8 on page 19 shows all possible loopback paths. Table 12 on page 20 lists available loopbacks.

During loopbacks the system generates an Alarm Indication Signal (AIS) past the loopback point toward the far unit. Loopbacks can be activated from the LOC (local) and REM (remote) front-panel pushbuttons, the console Test menus, and the management unit interface. Table 13 on page 21 lists loopback equivalents for different activation methods. Only one loopback option can be enabled at a time. During a loopback, the Loopback LEDs on the front panel indicate the type of loopback currently present in the system. See Table 4, “Line and Desktop

Unit Front Panel LED Indications,” on page 6.

The system reverts to normal transmission of payload data after the specified timeout period has elapsed. If a timeout period is not specified, the loopback must be manually disengaged before normal transmission of data can resume.

Test loopbacks disrupt normal end-to-end transmission of customer data and are the equivalent of taking the circuit out of service. The circuit does not revert to normal operation until loopbacks are disengaged manually or until after the specified loopback timeout per iod has expired.

NTU InterfaceLTU Interface

Single-pair

Nx64k Nx64k

HDSL HDSL

HDSL loop

Figure 8. Loopback Operations

UTU-701 and ETU-751 List 1 August 9, 2002 19

Functional Description 700-701-100-02

Table 12. Loopbacks Selected at Front Panel Pushbuttons and Console Screens

Loopback Description

The two loopbacks that follow can be selected from the LOC and REM front-panel pushbuttons, the console screens, or the management unit interface.

LOC Pushbutton—Local HDSL Loopback

REM Pushbutton—Remote Loopback

The three loopbacks that follow are available exclusively from the console screens or management unit interface. Local Interface Loopback Data is looped back at the closest point in the local unit toward customer equipment. This loopback

Local or Interface Loopback Away from the Local Equipment

Remote Interface Away from the Local Equipment

This is an analog loopback implemented in both HDSL transceivers, and enables a complete checkout of the local equipment by looping back data at the furthest point before the transmission media. The HDSL link goes down as a result of this loopback, and is therefore not selectable from the remote unit console screens.

Data is transmitted across the HDSL link and looped back at the remote interface ports. The HDSL link must be up for this loopback to be available. With no HDSL link up, the REM button will not enable any loopbacks.

is useful for verification of a proper connection at the local interface between your DTE and the local HDSL card. The HDSL link is maintained during this loopback.

Data is looped back at the local unit or remote unit back toward the remote DTE equipment. This is equivalent to pressing the REM button on the remote unit’s front panel, and is made available at the local console screen for ease of installation. The injected test data and loopback verification must still be performed at the remote unit site. Local equipment outputs an AIS for the duration of this test.

Data is looped back at the remote unit toward the remote DTE equipment. This is available at the local console screen for the duration of this test. The injected test data and loopback verification must still be performed at the remote unit site. Local equipment outputs an AIS for the duration of this test.

The following applies to LTU and NTU loopbacks:

• No inband loopback codes are recognized or generated.

• A remote HDSL loopback is not available from the local console screen as it causes the HDSL link to go down

and requires user action at the remote unit to disengage the loopback.

20 August 9, 2002 UTU-701 and ETU-751 List 1

700-701-100-02 Functional Description

Table 13 summarizes the equivalent loopbacks for two different activation methods:

• LTU and NTU LOC and REM buttons

• console screen Test menus (see “Testing” on page 60 for loopback operation from the Test menus)

Table 13. Loopback Equivalents

Front Panel

LTU LOC button NETWORK LTU REM button NETWORK NTU-I/F

NTU LOC button CUSTOMER NTU REM button CUSTOMER LTU-I/F

(a) Activated from console screen Test menu at LTU. (b) Activated from console screen Test menu at NTU.

Console Screen Test Menu

Loopback mode Loopback Position

(a)

NETWORK LTU-I/F

(b)

CUSTOMER NTU-I/F

LTU-HDSL

NTU-HDSL

BER TESTING

The HDSL units provide a mechanism for validating circuit integrity utilizing a pseudorandom bit sequence (PRBS) generator and BER meter internal to the LTU unit. This diagnostic test disrupts the normal flow of payload traffic, and requires the presence of a Network NTU-I/F loopback or an external physical loopback at the NTU interface connector. The test is run at the selected HDSL Payload Rate (see Table 18 on page 38). BER results are accumulated continuously and updated on the console screen at intervals of approximately 16 seconds.

The PRBS data pattern is always generated at the LTU toward the HDSL channel, and the BER is always measured at the LTU based on data received from the HDSL channel. The test may be initiated and stopped from the Test menu at either the LTU or NTU console screen.

The BER test must be stopped before leaving the test menu to restore normal payload transmission. Typing following message to display:

while the BER test is in progress causes the

ESC

“BER Test in Progress. Must STOP

before leaving screen.”

UTU-701 and ETU-751 List 1 August 9, 2002 21

Inspection, Safety, and Equipment Repair 700-701-100-02

INSPECTION, SAFETY, AND EQUIPMENT REPAIR

This section describes the procedures to be followed regarding product inspection, safety, and repair.

INSPECTION

Open the line or desktop unit shipping carton and inspect the contents for signs of damage. If the equipment was damaged in transit, immediately report the extent of the damage to the transportation company and to ADC (see

“Product Support” on page 69).

SAFETY

To ensure safety of personnel and equipment, carefully observe the following safety rules:

Be careful when installing or mod ifyin g telephone lines. Dangero us voltages can be present. It is unsafe to install telephone wiring during a lightning storm.

Always disconnect all telephone lines and power connections before servicing or disassembling this equipment. All wiring external to the product should follow the local wiring codes.

Die Eingangsspannung fuer die UTU-701C Karte is nominell –4 8 VDC, Toleranz -36 bis –72 VDC. Die Gleichstromquelle muss den Vorschriften gemäß der Norm EN60950 fuer Fernsprechnetzspannung (TNV) und Sicherheitskleinspannung (SELV) entsprechen.

Bitte beachten Sie, dass beim Installieren oder Veraendern von Telefonleitungen gefaehrliche Spannungen entstehen koennen. Es ist ebenfalls gefaehrlich, waehrend eines Gewitters Installationen an Telefondraehten vorzunehmen.

Bei Installation, Wartung oder Veraenderung des Geraetes muessen alle Telefon- und Netzkabel ausgezogen werden. Alle externen Verdrahtungsarbeiten sollten gemaess den Elektrizitaetsvorschriften des jeweiligen Landes ausgefuehrt werden.

EQUIPMENT REPAIR

To ensure the equipment does not become damaged, carefully observe the following cautions:

If a problem has been isolated to this unit, do not attempt to repair it. The unit's components are not user serviceable and, therefore, m ust not be replac ed. Please return the unit to ADC f or repairs.

Wenn eine Störung auf dieses G erät zurückgeführt werden kan n, sollte man nicht ver suchen es zu reparieren. Die Geräteteile sind nicht vom Endverbraucher zu warten und müssen darum nicht ersetzt werden. Bitte senden Sie das Geräet zur Reparatur zurueck an ADC.

22 August 9, 2002 UTU-701 and ETU-751 List 1

700-701-100-02 Installation and Startup

INSTALLATION AND STARTUP

This section describes the installation and startup procedures for the line and desktop units.

UTU-701C LINE UNIT INSTALLATION

Perform the following steps to install the UTU-701C line unit.

The chassis ground of the shelf or remote enclosure receiving these units must be connected to earth ground for protection of the equipment and for safety of personnel.

Primary protection for the HDSL line must be provided by the user. Both primary and secondary protection must be provided by the user if the E1 line runs outside of the building.

1 Align the UTU-701C with the card guides in the shelf or enclosure (see Figure 9). 2 Slide the line unit into the guides, then push the unit inward until it seats firmly in the card-edge connector. 3 Tighten the two captive screws on the UTU-701C front panel to secure the unit in place. 4 If configuring the line unit as an LTU, power up the shelf and proceed as instructed on pages 25 through 27

and 37 to access the Local Unit Role option in the Config System Settings menu (the default setting is NTU).

5 Set the TT clock at the DTE for the default HDSL payload rate of 256 kbps (4 time slots).

EMS-83x

UTU-701C

Figure 9. Installing the UTU-701C Line Unit

UTU-701 and ETU-751 List 1 August 9, 2002 23

Installation and Startup 700-701-100-02

The line and desktop units will reset and their LEDs will sequence through the startup cycle following any change to the Local Unit Role option. If necessary, log on again by pressing the

SPACEBAR

several times.

ETU-751C DESKTOP UNIT INSTALLATION

Perform the following steps to install an ETU-751C desktop unit.

1 Insert the AC power cord into the power cord receptacle on the ETU rear panel. 2 Plug the power cord into a source of 100 V to 240 V, 50 or 60 Hz AC power. 3 If configuring the desktop unit as an LTU, power up the shelf and proceed as instructed on pages 25 through

27 and 37 to access the Local Unit Role option in the Config System Settings menu (the default setting is

NTU).

4 Connect the DTE cables to the 120 or 75 Ω connectors on the ETU-751C rear panel. 5 Connect the HDSL line cable to the HDSL line connector on the ETU rear panel.

HDSL STARTUP AND SYNCHRONIZATION

The rate selectable LTU holds the configuration settings for the rate selectable NTU. At startup, the LTU first confirms that the NTU is a rate selectable unit. The LTU then configures the NTU with the required settings.

Power up the rate selectable units and observe the synchronization process as follows:

1 Power up the shelf or enclosure where the units are installed. 2 Confirm the following:

• The HDSL ALM LED is on and the HDSL SYNC LED flashes once per second as the units

self-configure and establish synchronization.

• After approximately 60 seconds the HDSL ALM LED is off and the HDSL SYNC LED is steady green.

The units are now ready for configuration through the console screen menus.

If the HDSL SYNC LED continues to fla sh after 90 se conds, th e HDSL line is faulty or one of th e units is not a rate selec tabl e un it. C he ck for the cor rec t lin e units. Test the HDSL line using the loopbacks described in “Testing” on page 60. Front panel loopback (LPBK) LED indications are described in Table 4 on page 6.

The LTU and NTU will reset and their LEDs will cycle through the startup sequence following any change to the HDSL Payload Rate option (see “Configure System Settings” on page 37).

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700-701-100-02 System Configuration

SYSTEM CONFIGURATION

Each line unit provides a system-wide view of the entire HDSL circuit, including the remote unit. After establishing communication with the remote line card, provisioning information can be set and performance can be monitored from the local unit. If the HDSL link is down, the only parameters that can be changed are those on the local line unit. The LTU overwrites any NTU settings when the link is re-established. The LTU also provides a special lockout feature that prevents users plugged into the NTU console port from changing the circuit configuration. When enabled, the maintenance terminal connected to an NTU provides a read-only view of the entire HDSL system.

The console screen men us are not a v ailab le when the HDSL car d is unde r the con trol of a she lf management unit.

The line unit option settings are stored in non-volatile RAM (NVRAM). No dip switches or jumpers are required to configure these options. These options are set from the console screen menus or management unit interface. Option settings stored in NVRAM are retained if the line unit loses shelf power.

MAINTENANCE TERMINAL CONNECTION

The maintenance terminal (or PC running a terminal emulation program) is used to access the console screen menus. Through these menus, the system is configured, monitored, tested, and its circuit inventory is displayed.

Maintenance terminal

DB-9 Connector

(DTE)

UTU/ETU

Console port

DB-9 Connector

(DCE)

4 3 2 5

DTR (Data Terminal Ready)

TD (Transmit Data) RD (Receive Data)

GND

3 2

Maintenance terminal

DB-25 Connector

(DTE)

3 2 7

Figure 10. UTU/ETU Console Port and Maintenance Terminal Connector Pinouts

UTU-701 and ETU-751 List 1 August 9, 2002 25

System Configuration 700-701-100-02

To connect and configure a maintenance terminal: 1 Connect a serial cable from the maintenance terminal 9-pin COM port to the line or desktop unit console port

connector (Figure 11). Ensure the Data Terminal Ready (DTR) signal from the terminal is connected as the HDSL card will not communicate without it. Data Terminal Ready (DTR) may also be asserted by connecting the DSR output signal (pin 6) to the DTR input (pin 4).

Maintenance terminal

9-pin COM port

Interface cable

Console port

Line unit

PairGain

Figure 11. Connecting a Maintenance Terminal to a Line Unit

2 Configure the maintenance terminal for the following communication settings:

• VT100 Emulation or ANSI (if VT100 is not available)

• Clear the modem initialization string, if supported by the terminal

• Bits per second: 1200, 2400, 4800, 9600 (default), or 19200 bps (recommended)

• Data bits: 8

• Parity: None

• Stop bits: 1

• Flow Control: None

If using a PC and Microsoft Windows terminal emulation program, deselect Show Scroll Bars and Use Function, Arrow, and Ctrl Keys from the Settings Terminal Preferences menu in Windows 3.1 or from the Properties menu

in Windows 95.

MODEM CONNECTION

For remote access to the line unit, an auto-answer modem can be connected to the console port. Use a null modem cable to connect the WorldDSL line unit and the modem.

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700-701-100-02 System Configuration

LOGGING ON

To log on to the maintenance terminal console screen: 1 Press the several times to display the Logon Password screen (Figure 12).

SPACEBAR

Figure 12. Logon Password Screen

The key is the factory default passwo rd. If you establi sh a different pas sword, you must

ENTER

type the new password (single w ord, no spaces, up to eight chara cters) on a subsequent log on. If the system does not respond, verify that the Hardware Flow Control of the maintenance terminal is set to NONE

2 Type the password at the prompt or press if a password has not been customized. The console screen

ENTER

menu bar displays (Figure 13).

Figure 13. Console Screen Menu Bar

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System Configuration 700-701-100-02

CONSOLE SCREEN STRUCTURE

The following sections describe the structure of the console screen and how to navigate through its menus and related displays.

The structure of the console screen displays and drop-down menus is shown in Figure 14. The names in the console screen menu bar identify each display and menu. The arrows in the menu bar following the Monitor, History, and Config names indicate the presence of a drop-down menu or sub-menu. The designations Display and Displays indicate that one or more displays are associated with the name in the menu bar or its drop-down menu.

Figure 14. Console Screen Menu Structure

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700-701-100-02 System Configuration

Table 14 describes the drop-down menus selected from the console screen.

Table 14. Console Screen Menus

Menu Name Function Described in this section

Main Display the Main console screen to:

• View the circuit configuration

“Main Console Screen” on page 46

• View performance summary information

• View alarm summary information

Monitor Monitor the past 24-hour performance of the LTU interfaces, NTU

“Monitor Menu” on page 48

interfaces, or HDSL spans.

History View 24-hour, 7-day, or alarm history displays for any of

“History Menu” on page 52

the following:

• LTU interface

• HDSL spans

• NTU interface

• Clear all the 24-hour, 7-day or alarm histories

Config Perform any of the following system functions:

• View or change global operating parameters for the system

“Config Menu Options” on page 32

• View or change LTU interface, HDSL span, or NTU interface operating

parameters

• View or change alarm parameters

• Set the time and date

• Set or change the unit password

• Change the circuit ID

• Configure terminal display

• Set all operating parameters to factory defaults

Test Perform any of the following test functions:

“Testing” on page 60

• Set the loopback mode and location

• Set the loopback time-out

• Enable or disable loopback operation

• Initiate BER test and monitor BER results

Inventory Display registration information to track product manufacturing,

“Inventory Screen” on page 58

configuration, and revision state. Quit Log off the system. “Logging Off” on page 45 Help Display a screen of helpful information regarding the product. -

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System Configuration 700-701-100-02

READING AND NAVIGATING MENUS

The menu and status bars appear on all console screens. The information on the rest of the screen varies depending on the function of the menu or screen.

The menu bar displays the name of each menu. Choosing Monitor, History, or Config from the menu bar drops down a menu of available options. When selected, all options on the Monitor drop-down menu, and the Alarm option on the Config drop-down menu, display drop-down submenus.

The status bar at the bottom of the screen displays the circuit ID, the current date and time, unit type, and current system information. Select Config from the console screen menu bar to enter or change the circuit ID and the current date and time. The items described in Table 15 correspond to the numbers in Figure 15.

Table 15. Console Screen Status Bar Displays

Item Field Description

1 Circuit ID Shows the user-selected name for the circuit (such as customer name). 2 Date and time Today's date in dd/mm/yy format. Today's time in 24-hour format. 3 Local unit role Either LTU or NTU. 4 System information Displays the current system status. The system information field shows one of

the following:

• Loop down - At least one configured HDSL channel is down, either due to

restart, or startup not completing.

• Alarm - A major alarm condition is currently active in the system. In the case

of a loopback bringing the loop down, LOSW alarms will be ignored.

• Loopback - The system is in a diagnostic loopback configuration.

• Update - Circuit-wide provisioning is in progress.

• Normal - All configured HDSL channels are up in the circuit, no alarms are

present, and provisioning is complete.

Figure 15. Items in Console Screen Status Bar

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Use the keys described in Table 16 to navigate the console screen and its menus:

Table 16. Console Screen Navigation Keys

Press this Key To Perform this Function

Alpha-numeric keys Type the underlined or highlighted letter to select and execute a menu item. For example on the

Main console menu, type to access the C

onfig drop-down menu.

Also use these key to enter values in text fields. For example, on the Config Date and Time menu, type the date in a DD/MM/YY format.

← →

and keys Moves horizontally across the Menu bar, except when in a text entry field. and keys Press the and keys from the Main console screen to access drop-down menus and their

↑ ↓ ↑ ↓

menu items. For example:

• press the and keys to select Config in the menu bar and press the key to access the

← →

↓

drop-down configuration menu, then

• press the and keys to highlight a menu item and press to select the item.

key Provides same function as the key.

TAB

CTRL E

+ + moves down one line in the History screens.

CTRL X CTRL X

CTRL

CTRL R CTRL R

SPACEBAR

+ + performs the page-up function in the History screens.

CTRL E

CTRL C

Selects options displayed for current menu item. For example, to select MANUAL or Nx64k AUTO

↑ ↓

↓

+ moves up one line in the History screens.

+ performs the page-down function in the History screens.

ENTER

mode from the Config System Settings menu:

ESC

• press the key to highlight the HDSL Rate Mode option, then

• press the until the desired option (MANUAL or Nx64k AUTO) is highlighted.

Exits the current screen and returns to the previous screen. Selection changes made on the current screen are discarded. Press while in a text field to cancel the text entry and restore

↓

SPACEBAR

ESC

the old value.

ENTER

Applies all selections on the current screen. For example, to select an HDSL payload rate from the Config System Settings menu:

• press the key to highlight the HDSL Payload Rate option, then

• type the desired number of time slots (1 to 4) and press to display the selected HDSL

↓

ENTER

payload rate (in MANUAL mode only).

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System Configuration 700-701-100-02

Config Menu Options

Type at the console screen (Figure 15) to display the Config menu (Figure 16). Table 17 lists the Config menu

options and the order of system configuration.

Figure 16. Console Screen Config Menu

Table 17. Config Menu Options and Recommended Order of System Configuration

Use this Option To: See page:

Terminal Settings Select the best viewing mode for the console screen. 33 Date and Time Set the system date and time. 34 Password Set or change the system password. 35 Circuit ID Assign a circuit ID. 36 System Settings Select and configure system-wide operating parameters. 37 LTU and NTU Interface Select and configure LTU/NTU-specific operating parameters. 39 Alarms Enable or disable alarms and to select alarm severity. 42 and 43 Set to Factory Dflts Reset all operating parameters to factory settings. 44

Observe the following when configuring a system:

• Configure settings in the order specified in Table 17. The System Settings must be configured before the LTU

and NTU Interface settings. Changing System Settings can clear values configured in LTU and NTU Interface

settings.

• When using a UTU as an LTU, change the Local Unit Role for the unit using the Config System Settings

menu. Note that changing the Local Unit Role of a UTU causes the unit to reset and the LEDs to cycle.

• When the HDSL units are reset or cycle power, the date field is preserved but the time field is not preserved.

Set the time using the Config Date and Time display. When the HDSL units are turned off and left off for a longer period of time (more than 24 hours, for example), set both the date and time using the Config Date and

Time display since neither value was preserved.

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700-701-100-02 System Configuration

Configure Terminal Settings

The console screens use line drawing characters to enclose menu selections and d ialog boxes. Because not all maintenanc e terminals and termi nal emulation programs adhere consistently to the VT100 standard, the HDSL card allows you to adjust the display for best results on a given terminal.

1Type at the Config drop-down menu to display the Config Terminal Settings menu (Figure 17).

Figure 17. Config Terminal Settings Menu

2 Press the or key to highlight the selection that matches the terminal configuration (which should also

↑ ↓

be the selection most clearly displayed on the monitor). The choices are:

• VT100

• Windows Terminal

• IBM PC

• ASCII

3 Press to confirm the selection.

UTU-701 and ETU-751 List 1 August 9, 2002 33

ENTER

System Configuration 700-701-100-02

Configure Date and Time

1Type at the Config drop-down menu to display the Config Date and Time menu (Figure 18).

Figure 18. Config Date and Time Menu

2 Type the date in DD/MM/YY format, then press . 3 Type the time in HH : MM format (24-hour clock), then press .

ENTER

The system date and time appear on the status line of the console screen and is useful when viewing alarm histories. When the HDSL units are reset or cycle power, the values in the date field are saved but the values in the time field are reset to 00 : 00. Set the time using the Config Date and Time display. When the HDSL units are turned off and left off for more than 24 hours, both the date and time must be set using the Config Date and Time display (neither value is saved after 24 hours).

Changing the date and time after the system has been running will not autom atically clear alarm histories. This must be done after setting the date and time. (See “Clear History Screens” on

page 58.)

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700-701-100-02 System Configuration

Change Password

1Type at the Config drop-down menu to display the Config Change Password menu (Figure 19).

Figure 19. Config Change Password Menu

2 Enter a new password (up to eight characters) to change the current system password. 3 Retype the new password (up to eight characters) to confirm its accuracy.

When changing the default password ( ), save the new password in a secure place. A password cannot be recovered if it is forgotten. Contact ADC if assistance is needed (see

“Product Support” on page 69).

ENTER

UTU-701 and ETU-751 List 1 August 9, 2002 35

System Configuration 700-701-100-02

Configure Circuit ID

The circuit ID appears on the status line of each console screen. Choose a unique circuit ID for each HDSL card.

1Type at the Config drop-down menu to display the Config Circuit ID menu (Figure 20).

Figure 20. Config Circuit ID Menu

2Type a new circuit ID (up to 23 characters) to change the current circuit ID.

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700-701-100-02 System Configuration

Configure System Settings

Use the System Settings menu to select and configure system-wide operating parameters. Configure system settings as follows:

1 Type at the Config drop-down menu to display the Config System Settings menu. Figure 21 shows the

Config System Settings menu for the UTU-701C and ETU-751C.

Figure 21. Config System Settings Menu

2 Do the following for each system option setting to be changed. Table 18 on page 38 describes the fields and

options displayed in the Config System Settings menu. The settings in boldface type are factory default settings.

• Use the or the key to select the sub-menu item to be changed.

• Use the to toggle to the appropriate option or type in the correct information, then press

ENTER

↑ ↓

SPACEBAR

to select the option.

When using a UTU or ETU as an LTU, configure the Local Unit Role option first.

UTU-701 and ETU-751 List 1 August 9, 2002 37

System Configuration 700-701-100-02

Table 18. Fields and Options Displayed in Config System Settings Menu

Field and Options Description

Application Mode

SINGLE System uses a single-pair of twisted copper wire to transport data. For more information, see

HDSL Rate Mode

MANUAL HDSL payload rate is set by number of time slots entered for the HDSL Payload Rate option.

HDSL Payload Rate

256kbps/4

Remote Console Access Selects whether a maintenance terminal connected to an NTU can affect system changes or

ALLOWED NTU console screens can be used to configure the system. BLOCKED NTU console screens are read-only. The LOC and REM pushbuttons on the NTU are also

Local Unit Role Configures UTU or ETU as LTU (master) or NTU (slave). The default configuration is NTU

LTU Configures UTU or ETU as LTU (master). The LTU-configured rate selectable UTU/ETU does

NTU Configures UTU or ETU as NTU (slave). The NTU-configured rate selectable UTU/ETU does not

(a) SINGLE is the only application mode and MANUAL is the only rate mode. (b) UTU-701C and ETU-751C have 32 time slots available for HDSL payload rates of 256 kbps to 2048 kbps. (c) An HDSL Payload Rate of 64 kbps (1 time slot) is transmitted at 256 kbps (see “G.704 Framing and Rate Selectable HDSL” on page 17). (d) Payload rates are displayed in the Config LTU and Config NTU Interface menus as Data Rate/# of TSs (data rate/number of time slots). (e) Changing the HDSL Payload Rate or Local Unit Role causes the unit to reset and the LEDs to cycle. Log on again by pressing the

SPACEBAR

(a)

(c)

several times.

“Rate Selectable Application Modes and Options” on page 14.

Selects the mode with which the HDSL payload rate will be determined.

Each time slot is 64 kbps. Selects the rate and reach at which data will be transported (see Table 2, “Transmission

Ranges with 0 db ETSI Noise,” on page 3).

Typing a time slot value of 1 through 32 and pressing sets and displays the HDSL payload rate.

(d) (e)

ENTER

is Read-only. This field may be set only at the LTU.

disabled. System changes can only be made from the LTU.

(slave). Note that changing the Local Unit Role of a UTU or ETU causes the unit to reset and the LEDs to cycle.

not provide line power to other HDSL units.

provide line power to other HDSL units.

(b)

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700-701-100-02 System Configuration

Configure LTU and NTU Interfaces

Select and configure the LTU- and NTU-related operating parameters as follows: 1 Type one of the following at the Config drop-down menu to display the Config LTU or NTU Interface menu:

• for the Config LTU Interface menu (Figure 22).

• for the Config NTU Interface menu (Figure 23).

Figure 22. Config LTU Interface Menu

Figure 23. Config NTU Interface Menu

The Data Rate/# of TSs and Beginning TS parameters in the Config LTU and NTU Interface menus

are read-only displays. The Data Rate/# of TSs value is set in the Config System

Settings menu as the “HDSL Payload Rate” (See Figure 21 on page 37). The Beginning TS value is 0 with 32 time slots selected (unstructured mode) and 1 when less than 32 time slots are selected (structured mode).

UTU-701 and ETU-751 List 1 August 9, 2002 39

System Configuration 700-701-100-02

2 Do the following for each interface option to be changed. Table 19 describes the fields and options displayed

in the Config LTU and Config NTU Interface menus.

• Use the or the key to select the sub-menu item to be changed.

• Use the to toggle to the appropriate option or type in the correct information, then press

ENTER

↑ ↓

SPACEBAR

to select the option.

The settings in boldface type in Table 16 are factory default settings.

Table 19. Fields and Options in Displayed Config LTU and Config NTU Interface Menus

Field and Options Description

Primary Timing Source Selects the clock source for the HDSL transmit direction.

EXT External 2.048 MHz clock (UTU-701C only) G.703 Input E1 clock

G.703 Port

CRC-4 Mode Cyclic Redundancy Check (CRC) to detect errors in transmitted data. Available only when less

DIS CRC-4 mode is disabled. CRC-4 mode is not available (N/A) when 32 time slots are selected

ENA The input G.703 signal is monitored for CRC-4 multiframe errors. A new CRC-4 code is output

PASSTHRU All time slot 0 bits are passed unchanged to the remote unit. Useful when detection of CRC-4

Idle Code User inputs the idle pattern (from 00 to FF) transmitted in unused time slots from LTU or NTU

Data Rate/# of TSs Read-only display of indicated HDSL data rate and corresponding number of time slots (TSs)

Beginning TS Read-only display of beginning time slot. This setting is 0 (zero) in the structured mode and

than 32 time slots are selected (places unit in structured application mode).

(places unit in unstructured application mode).

for use at the remote unit. Detected errors are displayed in the Monitor LTU and NTU Interface screens.

errors is performed by customer equipment.

G.703 port.

Factory default setting is FF.

as set with HDSL Payload Rate option in the Config System Settings menu (See “G.704

Framing and Rate Selectable HDSL” on page 17). Default setting is 256kbps/4.

one (1) in the unstructured mode.

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700-701-100-02 System Configuration

Configure Alarms

Use the Config Alarms menu to configure LTU and NTU Interface alarm parameters and the HDSL span alarm parameters. When setting alarm parameters for LTUs and NTUs, keep the following rules in mind:

• Disabled alarms do not cause LED indications and are not stored in history. Console screen menu alarm

history reports are not generated.

• Minor alarms cause LED indications and are stored in history. Console screen menu alarm history reports are

generated.

• Major alarms cause LED indications, actuate the line unit alarm relay, and are stored in history. Console

screen menu alarm history reports are generated.

• The LTU alarm relay activates in response to a major alarm at the LTU only.

• The NTU alarm relay activates in response to a major alarm at the NTU only.

• For the duration of a major alarm, the line unit alarm relay contacts are connected as follows: – The C (Common) contact is connected to the NO (Normally Open) contact. – The NC (Normally Closed) contact is floating.

• With no alarm, the C and NC contacts are connected, and the NO contact remains floating.

• The line unit alarm relay operates in a fail-safe mode. When no power is applied to the line unit, the alarm

relay C and NO contacts are connected with the NC contact floating.

Type at the Config drop-down menu to display the Config Alarms menu (Figure 24).

Figure 24. Config Alarms Menu

UTU-701 and ETU-751 List 1 August 9, 2002 41

System Configuration 700-701-100-02

Alarms for LTU and NTU Interface

1 Type one of the following at the Config Alarms drop-down menu to display the Config Alarms LTU or Config

Alarms NTU Interface menu:

• for the Config Alarms LTU Interface menu (Figure 25)

• for the Config Alarms NTU Interface menu (Figure 26)

Figure 25. Config Alarms LTU Interface Menu

Figure 26. Config Alarms NTU Interface Menu

2 Do the following for each interface option to be changed. The fields displayed in the Config Alarms LTU and

Config Alarms NTU Interface menus are described in Table 20.

• Use the or key to select the sub-menu item to be changed.

• Use the to toggle to the appropriate option or type in the correct information, then press

ENTER

42 August 9, 2002 UTU-701 and ETU-751 List 1

↑ ↓

SPACEBAR

to select the option.

700-701-100-02 System Configuration

Table 20. Fields Displayed in Config Alarms LTU and Config Alarms NTU Interface Menus

Field Description

Loss of Signal (LOS) Loss of signal at the G.703 input. Loss of Frame Alignment (LFA) Loss of frame alignment at the G.703 input. Receive Alarm Indication Signal (AIS) Alarm indication signal (unframed all ones) received at the G.703 input. Remote Alarm Indication Signal (RAI) Remote alarm indication signal received at the G.703 input (through A-bit). Loss of Clock (LOC) Applies to loss of external clock when EXT timing is used. The external clock was lost for

the previous second. This alarm is reset when the clock is active again.

HDSL Span 1 Alarms

1 Type at the Config Alarms drop-down menu to display the Config Alarms HDSL Span 1 menu (Figure 27).

Figure 27. Config Alarms HDSL Span 1 Menu

2 Do the following for each interface option to be changed. The fields displayed in the Config Alarms HDSL

Span 1 menu are described in Table 21 on page 44.

• Use the or key to select the sub-menu item to be changed.

• Use the to toggle to the appropriate option or type in the correct information, then press

ENTER

UTU-701 and ETU-751 List 1 August 9, 2002 43

↑ ↓

SPACEBAR

to select the option.

System Configuration 700-701-100-02

Table 21. Fields Displayed in Config Alarms HDSL Span 1 Menu

Field Description

Margin (MAR) Selects whether the alarm is disabled (DIS), or enabled and reported as a Minor (MIN) or Major

Margin Threshold Selects the margin alarm threshold (from 0 dB to 15 dB) for all four margin measurements of the

Errored Seconds (ES) Selects whether the alarm is disabled (DIS), or enabled and reported as a Minor (MIN) or Major

24 HR ES Threshold Selects the errored seconds threshold (0 to 255) for all four errored seconds measurements of the

Loss of Sync Word (LOSW) Selects whether the alarm is disabled (DIS), or enabled and reported as a Minor (MIN) or Major

Power Feed Open Not supported. These units do not supply power to other units. Power Feed Short Not supported. These units do not supply power to other units.

(MAJ) Alarm when the margin falls below the threshold. This indicates a potential degradation of line quality. If an alarm is configured as a protection switch (PSW), it will behave as a Major (MAJ) Alarm, and cause protection switching to engage.

span.

(MAJ) Alarm when 24-hour ES count exceeds the threshold.

span measured over a 24-hour period.

(MAJ) Alarm when the LOSW condition (HDSL loop down) occurs.

SET TO FACTORY DEFAULTS

Set to Factory Dflts is the screen from which all operating options can be reset to the ADC factory defaults. 1 Type at the Config drop-down menu to display the Set to Factory Dflts screen (Figure 28).

Figure 28. Set to Factory Defaults Screen

2 Press to reset value to factory defaults. A confirmation message appears at the bottom of the display:

ENTER

SETTING FACTORY DEFAULTS ... SERVICE *WILL* BE INTERRUPTED! ARE YOU SURE(Y/N)?

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700-701-100-02 System Configuration

3 Do one of the following:

• Type to keep the current settings.

• Type to reset values to factory defaults. The system resets and both LTU and NTU units go through

their respective synchronization processes. If loops are down or are in update mode while Set to Factory Dflts is enabled, only the local unit will restart. If the loops are up, both the LTU and NTU will restart.

The factory default system settings are listed in Table 22.

Table 22. Factory Default System Settings

Operating Option Default Setting

System Settings Application Mode SINGLE HDSL Rate Mode MANUAL HDSL Payload Rate 256kbps/4 Remote Console Access ALLOWED Protect Switch Command Not supported on these units. Local Unit Role NTU

LTU/NTU Interface

G,703 port

Interface Type G.703 Data Rate/# of TSs 256 / 4 Beginning TS 0 (structured mode)

Alarms LTU/NTU Interface

Loss of Clock (LOC) MIN (Minor)

Alarms HDSL Spans

Margin (MAR) MIN (Minor) Margin Threshold 6 Errored Seconds (ES) MIN (Minor) 24 Hour ES Threshold 70 Loss of Sync Word (LOSW) MAJ (Major) Power Feed Open (PFO) Not supported on these units. Power Feed Short (PFS) Not supported on these units.

1 (unstructured mode)

LOGGING OFF

If the maintenance terminal must be left unattended for any length of time, log off until work resumes. This prevents unauthorized persons from inadvertently changing operating parameters.

Log off by choosing Quit from the menu bar or by disconnecting the cable connecting the maintenance terminal to the line or desktop unit. Automatic log off occurs after 20 minutes of keyboard inactivity.

UTU-701 and ETU-751 List 1 August 9, 2002 45

Viewing Status 700-701-100-02

VIEWING STATUS

The following sections describe the screens that display status and system information, such as current alarm status, performance history, product, and configuration information.

View status using a maintenance terminal or PC running a terminal emulation program connected to the V.24 (RS-232) console port. See page 25 for instructions on connecting a maintenance terminal or PC.

MAIN CONSOLE SCREEN

The Main console screen displays a summary of LTU and NTU circuit configuration, performance statistics, and alarm status for each interface in the circuit.

Type to display the Main console screen (Figure 29). The screen shown in Figure 29 is a display of the LTU and NTU in the single-pair application. The numbered fields are described in Table 23.

Field Description

1 Shows performance and alarms for the LTU user interface. 2 Shows performance and alarms for the LTU HDSL interface. 3 Shows performance and alarms for the NTU HDSL interface. 4 Shows performance and alarms for the NTU user interface.

Figure 29. Main Console Screen

Table 23. Reading the Main Console Screen

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700-701-100-02 Viewing Status

Table 24 describes the fields displayed on the Main console screen.

Table 24. Fields Displayed in Main Console Screen

Field Description

Circuit Configuration

G.703 Indicates the interface standard for G.703 data port.

n TS Indicates the number of time slots (n) mapped to the G.703 interface.

Timing Indicates the primary source the unit uses for clock synchronization:

EXT External 2.048 MHz clock.

G.703 G.703 port receive clock.

Application mode Indicates that the Single Pair (SINGLE) application mode is in effect.

Performance

MAR1 Displays the Margin value for each HDSL interface or displays link status (SIG, ACQ, etc.) if the link

is not up.

MAR2 Reserved

ES1 Displays the Errored Seconds (ES) counts for each HDSL interface. The counts are for the latest

24-hour period, calculated as the sum of the counts in the previous 95 15-minute intervals, plus the count in the current 15-minute interval.

ES2 Reserved

Alarms

The Alarms field displays a list of all active alarms at each LTU/NTU and HDSL interface.

Possible LTU/NTU Interface Alarms

Loss of Signal (LOS) Loss of signal at the G.703 input.

Loss of Frame Alignment (LFA) Loss of frame alignment at the G.703 input.

Receive Alarm Indication

Alarm indication signal (unframed all ones) received at the G.703 input.

Signal (AIS)

Remote Alarm Indication

Remote alarm indication signal received at the G.703 input (through A-bit).

Signal (RAI)

Loss of Clock (LOC) Applies to loss of external clock when EXT timing is used. The external clock was lost for the

previous second. This alarm is reset when the clock is active again.

Possible HDSL alarms

Margin (MAR) Margin has fallen below threshold set for the HDSL interface.

Errored Seconds (ES) Errored seconds count has exceeded threshold set for the HDSL interface.

Loss of Sync Word (LOSW) Loss of sync word at the HDSL interface. Remains active during restart, but not a cold start.

UTU-701 and ETU-751 List 1 August 9, 2002 47

Viewing Status 700-701-100-02

MONITOR MENU

The Monitor menu contains the following options:

• LTU Interface screen that displays the 24 hour and cumulative count of errors at the LTU G.703 port.

• NTU Interface screen that displays the 24 hour and cumulative count of errors at the NTU G.703 port.

• HDSL Span 1 screen that displays the circuit performance and 24-hour error counts at the HDSL span 1

interface.

Type at the console screen to display the Monitor menu (Figure 30).

Figure 30. Monitor Menu

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700-701-100-02 Viewing Status

Monitor LTU Interface Screen

At the Monitor menu (Figure 30), type to display the Monitor LTU Interface screen (Figure 31). Table 25

describes the fields displayed in the Monitor LTU and Monitor NTU Interface screens.

Figure 31. Monitor LTU Interface Screen

Table 25. Fields Displayed in Monitor LTU and Monitor NTU Interface Screens

Field Description

G.703 Port

Errored Seconds (ES) 24 Hour Count

Severely Errored Seconds (SES) 24 Hour Count

Unavailable Seconds (UAS) 24 Hour Count

CRC Errored Seconds (Cumulative)

Bipolar Violation Seconds (Cumulative)

Clear 24-Hour History The date and time that the 24-hour histories were last cleared are displayed here. Enable this

The number of one-second intervals in which at least one bipolar violation (BPV) or one CRC-4 error was detected at the G.703 input port during the last 24hours.

The number of one second intervals during which a Loss of Signal (LOS), an Alarm Indication Signal (AIS), or a Loss of Frame (or CRC-4 Multiframe) Alignment (LFA) occurred at the incoming port.

The number of seconds that G.703 input signals were unavailable during the last 24 hours. After ten consecutive SESs, the system is deemed unavailable, and the current UAS counter begins counting from ten. After ten consecutive non-SESs, the system returns to availability, and the ten counts representing the non-SESs are removed from the UAS counter.

The number of CRC-4 errors that were detected at the G.703 port since error counters were last cleared. Turning CRC-4 mode on (ENA) and off (DIS) clears the CRC-4 error counter.

The number of seconds in which bipolar violations were detected at the G.703 port since error counters were last cleared.

function by pressing or to clear all 24-hour history counters (including HDSL). This action must be confirmed by pressing .

L ENTER

UTU-701 and ETU-751 List 1 August 9, 2002 49

Viewing Status 700-701-100-02

Monitor NTU Interface Screen

At the Monitor menu (Figure 30), type to display the Monitor NTU Interface screen (Figure 32).

The fields displayed in the Monitor NTU Interface screen are identical to those displayed in the Monitor LTU Interface screen (see Table 25 on page 49).

Figure 32. Monitor NTU Interface Screen

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700-701-100-02 Viewing Status

Monitor HDSL Span 1 Screen

The HDSL Span 1 screen (Figure 33) displays the circuit performance and 24-hour error counts at the HDSL span 1 interface. A span is defined as the link between two HDSL units (that is, from an LTU to an NTU) which, in this case, is comprised of a single loop (that is, one twisted-copper pair). The values under the LTU-1 column represent HDSL Span 1 as measured by the LTU. The values under the NTU-1 column represent HDSL Span 1 as measured by the NTU.

At the Monitor menu (Figure 30), type to select the Monitor HDSL Span 1 screen (Figure 33). The fields

displayed in the Monitor HDSL Span 1 screen are described in Table 26.

Figure 33. Monitor HDSL Span 1 Screen

Table 26. Fields in Monitor HDSL Span 1 Screen

Field Description

Current Margin (dB) (MAR) Indicates the excess signal-to-noise ratio relative to a 10-7 bit error rate. The normal range of

a typical margin is from 6 to 22 dB, with a value of 6 dB corresponding to a predicted BER of 10 Low Margin (dB) Indicates the lowest margin since startup or the last 24-hour history clear. High Margin (dB) Indicates the highest margin since startup or the last 24-hour history clear.

Pulse Attenuation (dB) Indicates the attenuation of the 2B1Q pulse from the distant end. This value is related to the cable

pair’s loss at 292 KHz. The normal range of pulse attenuation is from 1 to 41 dB.

Errored Seconds (ES) The number of one-second intervals in which at least one HDSL CRC-6 error or loss of Sync Word

(LOSW) was detected on the HDSL span during the last 24 hours.

Unavailable Seconds (UAS) The number of seconds that the HDSL span was down during the last 24 hours. HDSL Tip/Ring Reversal Indicates whether the two conductors of the HDSL span are correctly connected or have been

interchanged. The system automatically compensates for an interchange of wire leads.

Clear 24-Hour History The date and time that the 24-hour histories were last cleared are displayed here. Enable this

function by pressing or to clear all 24-hour history counters (including HDSL). This

action must be confirmed by pressing .

ENTER

-10

UTU-701 and ETU-751 List 1 August 9, 2002 51

Viewing Status 700-701-100-02

HISTORY MENU

The History menu contains the following status screens:

• LTU/NTU Interfaces that display alarm performance history for the LTU and NTU interface.

• HDSL Span that displays 24-hour, 7-day, and alarm performance history for the HDSL span.

The History menu also provides the option to clear the 24-hour, 7-day, and alarm history screens. This option is described on page 58.

Type to select the History menu (Figure 34).

Figure 34. History Menu

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700-701-100-02 Viewing Status

LTU and NTU Interface Performance History Screens

At the History menu (Figure 34), type to select the History LTU Interface menu (Figure 35).

Figure 35. History LTU Interface Menu

At the History menu (Figure 34), type to select the History NTU Interface menu (Figure 36).

Figure 36. History NTU Interface Menu

UTU-701 and ETU-751 List 1 August 9, 2002 53

Viewing Status 700-701-100-02

Only the Alarm History screen is available for the LTU and NTU interfaces. The 24 Hour and 7 Day History screens, as well as the Alarm History screen, are available for HDSL Span 1.

LTU and NTU Interface Alarm History Screens

At the History LTU or History NTU Interface menu, type the key to select an Alarm History status screen. The

LTU Interface Alarm History screen is shown in Figure 37.

Figure 37. LTU Interface Alarm History Screen

Table 27 describes the four columns of data contained in the LTU Interface and NTU Interface Alarm History

screens. If no alarm has occurred since the last alarms were cleared, the message "No alarms reported" displays on the appropriate line for each alarm.

Table 27. LTU Interface and NTU Interface Alarm History Data

Column Description

Alarm Type of alarm: LOS, LFA, AIS, RAI, and LOC First Date and time the alarm first occurred Last Date and time the alarm last occurred Count Number of times the alarm has occurred since the alarms were last cleared

(a) Not available on Nx64k serial data port units.

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700-701-100-02 Viewing Status

HDSL Span Performance History Screens

At the History menu (Figure 34), type to select the History HDSL Span 1 menu (Figure 38).

Figure 38. History HDSL Span 1 Menu

The History HDSL Span 1 menu contains three viewing options:

• 24 Hour History

• 7 Day History

• Alarm History

HDSL Span 1 24 Hour History Screen

At the History HDSL Span 1 menu (Figure 38), type to select the 24 Hour History screen for HDSL Span 1 (Figure 39).

Figure 39. 24 Hour History Screen for HDSL Span 1

UTU-701 and ETU-751 List 1 August 9, 2002 55

Viewing Status 700-701-100-02

The 24 Hour History screen for HDSL Span 1 contains three columns of data that show (from left to right) the:

• Starting time of each 15-minute interval.

• Number of ES/UAS at the LTU end of the HDSL span (LTU-1) for each interval. A dash (-) represents a count

of zero.

• Number of ES/UAS at the NTU end of the HDSL span (NTU-1) for each interval. A dash (-) represents a

count of zero.

The entire display consists of six screens, each showing sixteen 15-minute intervals (4 hours) of performance history.

Type + or + to display the previous or next screen in the sequence, respectively. Press the or

CTRL R CTRL C

key to scroll the screen up or down by one line, respectively.

↓

↑

7 Day HDSL Span 1 Performance History Screens

At the History HDSL Span 1 menu (Figure 38), type to select the 7 Day History status screen for HDSL

Span 1 (Figure 40).

Figure 40. 7 Day History Status Screen for HDSL Span 1

Each HDSL Span 7-Day History screen contains three columns of data showing (from left to right) the:

• date of each completed day within the 7-day interval

• number of ES/UAS at the LTU end of the HDSL span (LTU-1) for each interval. A dash (-) represents a count

of zero

• number of ES/UAS at the NTU end of the HDSL span (NTU-1) for each interval. A dash (-) represents a count

of zero

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700-701-100-02 Viewing Status

HDSL Span 1 Alarm History Screens

At the History HDSL Span 1 menu (Figure 38), type to select the Alarm History status screen for HDSL

Span 1 (Figure 41).

Figure 41. Alarm History Status Screen for HDSL Span 1

Table 28 describes the four columns of data contained in each HDSL Span Alarm History screen.

Table 28. HDSL Span Alarm History Data

Column Description

Alarm Type of alarm: MAR1 (Margin Span 1), ES1 (Errored Seconds Span 1), LOSW1 (Loss

of Sync Word Span 1), PFO1

(a)

(Power Feed Open Span 1), PFS1

(a)

(Power Feed Short

Span 1) First Date and time the alarm first occurred Last Date and time the alarm last occurred Count Number of times the alarm has occurred since the alarms were last cleared

(a) Not supported. These units do not supply power to other units.

If no alarm has occurred since the last alarms were cleared, the message "No alarms reported" displays on the appropriate line for each alarm.

UTU-701 and ETU-751 List 1 August 9, 2002 57

Viewing Status 700-701-100-02

Clear History Screens

Use the following options to clear the 24 Hour, 7 Day, or Alarm History status screens:

• Clr 24 Hr Hist: clears all of the 24-hour history error counters

• Clr 7 Day Hist: clears all of the 7-day history error counters

• Clr Alarm Hist: clears all alarm history logs

To clear the status screens:

1Select the alarm history option to be cleared with the and keys, then press . The following confirmation

↑ ↓

ENTER

message displays:

ALL (24-HOUR, or 7 DAY, or ALARM) HISTORIES WILL BE CLEARED. CONTINUE (Y/N)? 2Do one of the following:

• Type to cancel the operation.

• Type to clear the screen. Typing displays the following confirmation message:

Y Y

24-HOUR HISTORIES CLEARED

INVENTORY SCREEN

The Inventory screen permits tracking of the system's inventory, service, and revision state. Table 29 on page 59 describes the fields displayed in each Inventory screen. Type to display the Inventory screen (Figure 42).

Figure 42. Inventory Screen

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700-701-100-02 Viewing Status

Table 29. Inventory Screen Data

Field Description

Network Diagram Displays the configuration of the LTU or NTU circuit. Product Displays the model numbers of the LTU, NTU, and any doubler units that comprise the channel. List # Displays the LTU, NTU, and doubler unit list numbers, which identify the particular unit versions. H/W Cfg Displays the LTU, NTU, and doubler unit hardware configuration level. Serial # Displays the unique serial number of the LTU, NTU and any doubler units for inventory and service

Manuf Displays the date the LTU, NTU, and any doubler units were manufactured. Days Op Displays the number of days the LTU, NTU, and any doubler units have been in operation. SW Part # Displays the ADC part number of the firmware. Chksum Displays the checksum of the LTU, NTU, and doubler unit proms. S/W Rev Displays the currently installed firmware version level of the LTU, NTU and any doubler units. SW Date Displays the date that the firmware was released.

tracking.

UTU-701 and ETU-751 List 1 August 9, 2002 59

Testing 700-701-100-02

TESTING

From the main console screen (Figure 29), type to display the Test menu from which you can set and run loopback and BER tests (Figure 43).

Figure 43. Test Menu Screen

Table 30 on page 61 lists the Test menu options. Table 31 lists the fields displayed in the Bit Error Rate (BER)

section of the test menu.

Loopbacks remain active until the timeout elapses or the configuration changes. The loopback location and status are indicated on the network diagram portion of the test menu, with "@@]"characters as follows:

• Flashing reverse video for active loopbacks

• Solid reverse video for disabled loopbacks

Front panel loopback (LPBK) LED indications are described in Table 4 on page 6. See page 19 for a description of loopbacks.

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700-701-100-02 Testing

Table 30. Test Menu Options

Operating Option Default Setting

Network Diagram Shows the loopback position and direction when the loopback is enabled and active.

Lpbk Dir Selects one of three loopback direction modes:

OFF No loopbacks are active.

NETWORK The loopback selected in Loopback Position is directed toward the network equipment connected to

the LTU.

CUSTOMER The loopback selected in Loopback Position is directed toward the customer's equipment connected

to the NTU.

Lpbk Loop(s) Selects the loops used in the loopback test:

NONE Option not available with single-pair HDSL card.

Lpbk Position Selects the possible loopback positions:

NONE Option not available with single-pair HDSL card.

Lpbk Timeout Selects one of three loopback timeouts:

NONE Disables automatic timeout cancellation of all loopbacks.

20 Automatically cancels any loopback 20 minutes after initiation.

120 Automatically cancels any loopback 120 minutes after initiation.

Table 31. BER Section of Test Menu

Field Description

BER Test Selects the state of the BER test.

STOP Terminates the current test and resumes normal transmission of user payload. Prior BER tests are

maintained for reference on the screen. STOP must be selected to terminate the BER test prior to exiting the screen.

RESTART Begins BER test. This disrupts user payload traffic and inserts a pseudo-random bit sequence (PRBS)

at the LTU toward the NTU. The actual pattern used is a 2x10 option (pressing the key) while the test is running. This entry reinitiates the BER values and

ENTER

restarts the test.

Det. Status Displays the current status of the BER detector at the LTU.

NOT ACTIVE Displays while the BER is not running. SYNCING Indicates that the BER qualification period is in progress (128 received bits are compared to the PRBS). IN SYNC Indicates that the BER test is in progress. The BER meter accumulates errors once per test interval (16

seconds). In a high bit error environment the test interval is shortened and the BER meter is updated

every second. Test Time Displays the elapsed test time for the BER test. Bit Errors Displays the number of bits received that did not match the PRBS pattern. This field is updated every

30 seconds, with a maximum value of 255 per update. BER Displays the Bit Error Rate computer for the current test. This field is updated very 16 seconds, as is

displayed in exponential form. The lowest positive displayable value is 1x10

pattern as defined by reselecting this

-11

UTU-701 and ETU-751 List 1 August 9, 2002 61

Firmware Download Utility 700-701-100-02

FIRMWARE DOWNLOAD UTILITY

The Firmware Download Utility is a separate program and is not available from the console

menus.

screen

This section describes the ETSI Firmware Download utility and how to use it to upgrade the line and desktop unit firmware. The ETSI Firmware Download utility is a program you can run on a PC to download new firmware to the LTU or NTU by connecting a standard RS-232 interface cable to the unit front panel V.24 console port. When using the ETSI Firmware Download utility, follow these rules:

• Make sure the destination unit where the new firmware is to be upgraded is correct before pressing the

key.

ENTER

• Do not disconnect the interface cable during the download process.

• Do not abort the download once it has started.

Figure 44 shows the menu for the ETSI Firmware Download Utility. The upper area of the ETSI Firmware

Download Utility menu displays the configuration options, and the lower area displays messages during the download process.

Figure 44. ETSI Firmware Download Utility Menu

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700-701-100-02 Firmware Download Utility

Initiate the Download and Navigate the Menus

To initiate the download process, go to the DOS prompt and type: dnl. Table 32 describes ETSI Firmware User Selectable Download Menu Options.

Table 32. ETSI Firmware User Selectable Download Menu Options

Option Description

PORT Provides support for two communication ports:

COM1 at Hex 3F8 COM2 at HEX 2F8

SPEED Supports Standard (9600 bit/s), Medium (19.2K kbps), Fast (38.4 kbps), Faster

(57.6 kbps) and TURBO (115.2 kbps) speeds. The number of data bits is fixed at 8, with no parity and 1 stop bit.

DESTINATION The destination can be set to one of the following:

LOCAL (unit connected to the maintenance terminal) LTU (LTU unit) NTU (NTU unit) NTU2 (NTU2 unit, in case of point-to-multipoint download) REGENERATOR1 REGENERATOR2

FILE NAME

(a) FILE NAME can be changed by pressing the key, then typing the new file name. Once in the FILE NAME field,

(a)

the download setup can be aborted only by typing key to start the download sequence.

Enter the firmware download file name.

DEL

+ . After typing the new file name, press the

CTRL C ENTER

Table 33 describes how to navigate within the ETSI Firmware Download menu.

Table 33. Navigating the ETSI Firmware Download Menu

Keystroke Result

PAGE UP PAGE DOWN

↑ ↓

ESC

ENTER

or Change a setting, with the exception of the FILE NAME setting.

and Move from field to field.

Abort setup and returns to the DOS prompt. Start the download process.

Download progress messages include:

• program size

• download time

• program checksum

• line-unit response

• time out message (posted if the line unit does not response within five seconds; when this occurs, the

download operation is aborted).

While downloading, the line or desktop unit front panel LEDs all light, then a binary count sequence indicates progress. When downloading is complete, the unit resets.

UTU-701 and ETU-751 List 1 August 9, 2002 63

Reference Information 700-701-100-02

REFERENCE INFORMATION

This section lists the pinouts for the ETU-751C rear panel connectors and the ECA-80x connector adapters.

ETU-751C CONNECTOR PINOUTS

The pinouts for the ETU-751C rear panel connectors are listed in Table 34 and Table 35.

Table 34. D9F HDSL Line Connector Pinouts

(a)

4 HDSL_RING_A HDSL Loop 1 (Ring) 9 HDSL_TIP_A HDSL Loop 1 (Tip) 1 HDSL_RING_B HDSL Loop 2 (Ring) 6 HDSL_TIP_B HDSL Loop 2 (Tip)

(a) All other pins are not used. Pins 1 and 6 not used on single-pair HDSL cards.

Signal Description

Table 35. D25F Data Port Connector Pinouts

(a)

7 Signal Ground SG SG SG 2

14 3

16 15

12 17

9 24

11 5

13 6

22 8

10 25 Test Mode TM TM not used Output 4

19 20

23 18 Local Loopback LL LL not used Input 21 Remote Loopback RL RL not used Input

(a) All other pins are not used.

Signal Name V.35 V.36 X.21 DCE Input/Output

Send Data SD_A

SD_B

Receive Data RD_A

RD_B

Send Timing SCT_A

SCT_B

Receive Timing RCT_A

RCT_B

Terminal Timing SCTE_A

SCTE_B

Clear to Send CTS CTS not used Output

Data Set Ready DSR DSR not used Output

Received Line Signal Detect RLSD RLSD I_A

Request to Send RTS RTS C_A

Data Terminal Ready DTR DTR not used Input

SD_A SD_B

RD_A RD_B

ST_A ST_B

RT_A RT_B

TT_A TT_B

T_A T_B

R_A R_B

S_A S_B

not used Output

TT_A TT_B

I_B

C_B

Input

Output

Input

Output

Input

64 August 9, 2002 UTU-701 and ETU-751 List 1

700-701-100-02 Reference Information

ECA-800 CONNECTOR ADAPTER (DB25M TO M34F FOR V.35)

The ECA-800 connector adapter (Figure 45) converts the DB25F data port connector on the desktop unit rear panel to a standard V.35 34-pin female connector. Table 36 lists the ECA-800 pinouts.

H M S

Figure 45. ECA-800 DB25M to M34F (V.35) Connector Adapter, Part Number 150-1470-01

Table 36. ECA-800 DB25M to M34F (V.35) Connector Adapter Pinouts

DB25M Connector M34F (V.35) Connector

Signal Pin Pin Signal

Shield 1 A Frame ground

Send Data A 2 P Send Data A

Send Data B 14 S Send Data B

Receive Data A 3 R Receive Data A

Receive Data B 16 T Receive Data B

Request to Send A 4 C Request to Send

Clear to Send A 5 D Clear to Send

Data Set Ready A 6 E Data Set Ready

Data Terminal Ready A 20 H Data Terminal Ready

Signal Ground 7 B Signal Ground

Received Line Signal Detect A 8 F Received Line Signal Detect

Send Timing A 15 Y Serial Clock Transmit A

Send Timing B 12 AA Serial Clock Transmit B

Receive Timing A 17 V Serial Clock Receive A

Receive Timing B 9 X Serial Clock Receive B

Terminal Timing A 24 U Serial Clock Transmit External A

Terminal Timing B 11 W Serial Clock Transmit External B

Local Loopback 18 L Local Loopback

Remote Loopback 21 N Remote Loopback

Test Mode 25 NN Test Mode

UTU-701 and ETU-751 List 1 August 9, 2002 65

Reference Information 700-701-100-02

ECA-801 CONNECTOR ADAPTER (DB25M TO DB15F FOR X.21)

The ECA-801 connector adapter (Figure 46) converts the DB25F data port connector on the desktop unit rear panel to a standard X.21 15-pin female connector. Table 37 lists the ECA-801 pinouts.

Figure 46. ECA-801 D25M to DB15F (X.21) Connector Adapter, Part Number 150-1470-01

Table 37. ECA-801 DB25M to DB15F (X.21) Connector Adapter Pinouts

DB25M Connector DB15F (X.21) Connector

Signal Pin Pin Signal

Send Data A 2 2 Send Data A

Send Data B 14 9 Send Data B Receive Data A 3 4 Receive Data A Receive Data B 16 11 Receive Data B

Request to Send A 4 3 Control A Request to Send B 19 10 Control B

Signal Ground 7 8 Signal Ground Receive Line Signal Detect A 8 5 Indication A Receive Line Signal Detect B 10 12 Indication B

Receive Timing A 17 6 Signal Element Timing A

Receive Timing B 9 13 Signal Element Timing B Terminal Timing A 24 1 DTE Signal Element Timing A Terminal Timing B 11 15 DTE Signal Element Timing A

ECA-802 CONNECTOR ADAPTER (DB9M TO RJ-45)

The ECA-802 connector adapter (Figure 47) converts the DB9F HDSL line connector on the desktop unit rear panel to an RJ-45 modular style connector. Table 38 lists the ECA-802 pinouts.

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700-701-100-02 Reference Information

Figure 47. ECA-802 DB9M to RJ-45 Connector Adapter, Part Number 150-1472-01

Table 38. ECA-802 DB9M to RJ-45 Connector Adapter Pinouts

DB9M Connector RJ-45 Connector

Signal Pin

(a)

HDSL Loop 1 (Ring) 4 1 HDSL Loop 1 (Ring)

HDSL Loop 1 (Tip) 9 2 HDSL Loop 1 (Tip)

HDSL Loop 2 (Ring) 1 4 HDSL Loop 2 (Ring)

HDSL Loop 2 (Tip) 6 5 HDSL Loop 2 (Tip)

(a) Pins 1, 6, 4, and 5 not used on single-pair HDSL cards.

(a)

Signal

UTU-701 and ETU-751 List 1 August 9, 2002 67

Reference Information 700-701-100-02

ECA-804 CONNECTOR ADAPTER (DB9M TO FOUR-POSITION

ERMINAL BLOCK)

The ECA-804 connector adapter (Figure 48) converts the DB9F HDSL line connector on the desktop unit rear panel to a four-position terminal-block style connector. Table 39 lists the ECA-804 pinouts.

1 2 3 4

Figure 48. ECA-804 DB9M to Four-Position Terminal Block Connector Adapter, Part Number 150-1474-01

Table 39. ECA-804 DB9M to Four-Position Terminal Block Connector Adapter Pinouts

Four-Position Terminal Block D9M Connector

Signal Pin

(a)

HDSL Loop 1 (Ring) 1 4 HDSL Loop 1 (Ring)

HDSL Loop 1 (Tip) 2 9 HDSL Loop 1 (Tip)

HDSL Loop 2 (Ring) 3 1 HDSL Loop 2 (Ring)

HDSL Loop 2 (Tip) 4 6 HDSL Loop 2 (Tip)

(a) Pins 3, 4, 1, and 6 not used on single-pair HDSL cards.

(a)

Signal

68 August 9, 2002 UTU-701 and ETU-751 List 1

700-701-100-02 Product Support

PRODUCT SUPPORT

ADC Customer Service Group provides expert pre-sales and post-sales support and training for all its products.

Technical support is available 24 hours a day, 7 days a week by contacting the ADC Technical Assistance Center at the number listed below.

Sales Assistance

800.366.3891 ext. 73000 (USA and Canada) or

952.917.3000 Fax: 952.917.3237

Systems Integration

800.366.3891, ext. 73000 (USA and Canada) or

952.917.3000

ADC Technical Assistance Center

800.638.0031 (USA and Canada) or

714.730.3222 Fax: 714.730.2400 Email: wsd_support@adc.com

Online Technical Support

Online Technical Publications

Product Return Department

800.366.3891 ext. 73748 (USA and Canada) or

952.917.3748 Fax: 952.917.3237 Email: repair&return@adc.com

All 800 lines are toll-free in the USA and Canada.

• Quotation Proposals

• Ordering and Delivery

• General Product Information

• Complete Solutions (from concept to

installation)

• Network Design and Integration Testing

• System Turn-Up and Testing

• Network Monitoring (upstream or downstream)

• Power Monitoring and Remote Surveillance

• Service/Maintenance Agreements

• Systems Operation

• Technical Information

• System/Network Configuration

• Product Specification and Application

• Training (product-specific)

• Installation and Operation Assistance

• Troubleshooting and Repair/Field Assistance

• www.adc.com/Knowledge_Base/index.jsp

• www.adc.com/library1/

• ADC Return Material Authorization (RMA)

number and instructions must be obtained before returning products.

UTU-701 and ETU-751 List 1 August 9, 2002 69

Abbreviations 700-701-100-02

ABBREVIATIONS

AIS Alarm Indication Signal LL Local Loopback ALM Alarm LOC Local ANSI American National Standards Institute LOC Loss of Clock AWG American Wire Gage LOSW Loss of Sync Word BER Bit Error Rate LPBK Loopback C Centigrade LTU Line Termination Unit COM Communication M34F M-type 34-pin Female Connector CRC Cyclic Redundancy Check MAR Margin CTS Clear To Send Mbps Megabits per second D15F D-type 15-pin Female Connector MHz Megahertz D25F D-type 25-pin Female Connector mm millimeter D9F D-type 9-pin Female Connector NC Normally Closed dB Decibel NO Normally Open DCE Data Communications Equipment NTU Network Termination Unit Det Detector NVRAM Non-volatile Random Access Memory dnl Download Nx64k Number (N) of 64 kbps DS0 time slots

mapped to a data port.

DS0 Digital Service, Level 0 (64 kbps) Op Operation DSR Data Set Ready PFO Power Feed Open DTE Data Terminal Equipment PFS Power Feed Short DTR Data Terminal Ready ppm pulse per minute EMC Electromagnetic Compliance PRBS Pseudorandom Bit Sequence EMI Electromagnetic Interference RAM Random Access Memory EMS Exchange Office Management Shelf REM Remote EMU Exchange Office Management Unit RL Remote Loopback ES Errored Second RLSD Received Line Signal Detector ETR ETSI Technical Report RTS Ready to Send ETSI European Telecommunications Standards

Institute

ETU ETSI Termination Unit SD Transmit Data EXT External ST Send Timing H/W Hardware SYNC Synchronization HDSL High-bit-rate Digital Subscriber Line TM Test Mode Hz Hertz TT Terminal Timing I/F Interface UAS Unavailable Seconds ID Identification UTU Universal Termination Unit INT Internal V Volts kbps kilobytes per second Vdc Volts direct current km kilometers VT100 A terminal-emulation system LED Light Emitting Diode W Watts

S/W Software

70 August 9, 2002 UTU-701 and ETU-751 List 1

CERTIFICATION AND WARRANTY

DIRECTIVE EN300 386-2 COMPLIANCE

To indicate compliance with EN300 386-2, these products have been affixed with the CE mark.

LIMITED WARRANTY

ADC DSL Systems, Incorporated (“ADC”) warrants that, for a period of sixty (60) months from the date of shipment, the hardware portion of its products will be free of material defects and faulty workmanship under normal use. ADC's obligation, under this warranty, is limited to replacing or repairing, at ADC's option, any such hardware product which is returned during the 60-month warranty period per ADC's instructions and which product is confirmed by ADC not to comply with the foregoing warranty.

ADC warrants that, for a period of 90 days from the date of purchase, the software furnished with its products will operate substantially in accordance with the ADC published specifications and documentation for such software. ADC’s entire liability for software that does not comply with the foregoing warranty and is reported to ADC during the 90-day warranty period is, at ADC’s option, either (a) return of the price paid or (b) repair or replace of the software. ADC also warrants that, for a period of thirty (30) days from the date of purchase, the media on which software is stored will be free from material defects under normal use. ADC will replace defective media at no charge if it is returned to ADC during the 30-day warranty period along with proof of the date of shipment.

The transportation charges for shipment of returned products to ADC will be prepaid by the Buyer. ADC will pay transportation charges for shipment of replacement products to Buyer, unless no trouble is found (NTF), in which case the Buyer will pay transportation charges.

ADC may use reconditioned parts for such repair or replacement. This warranty does not apply to any product which has been repaired, worked upon, or altered by persons not authorized by ADC or in ADC's sole judgment has been subjected to misuse, accident, fire or other casualty, or operation beyond its design range.

Repaired products have a 90-day warranty, or until the end of the original warranty period—whichever period is greater.

ADC DISCLAIMS ALL OTHER WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, WITH RESPECT TO ITS PRODUCTS AND ANY ACCOMPANYING WRITTEN MATERIALS. FURTHER, ADC DOES NOT WARRANT THAT SOFTWARE WILL BE FREE FROM BUGS OR THAT ITS USE WILL BE UNINTERRUPTED OR REGARDING THE USE, OR THE RESULTS OF THE USE, OF THE SOFTWARE IN TERMS OF CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.

MODIFICATIONS

Any changes or modifications made to these devices that are not expressly approved by ADC DSL Systems voids the user's warranty.

All wiring external to the product should follow local wiring codes.

For technical assistance, refer to “Product Support” on page 20.

ADC DSL Systems, Inc.

14402 Franklin Avenue Tustin, CA 92780-7013

Tel: 714.832.9922 Fax: 714.832.9924

Technical Assistance

ISO9001/TL9000

DNV Certificat ion, Inc.

REGISTERED FIRM

DOCUMENT: 700-701-100-02

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1242371

ADC UTU-701C, ETU-751C User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

USING THIS MANUAL

INSPECTING SHIPMENT

TABLE OF CONTENTS

700-701-100-02 List of Figures

LIST OF TABLES

OVERVIEW

RATE SELECTABLE HDSL UNIT FIRMWARE

EMU FIRMWARE COMPATIBILITY

APPLICATION INTERFACE

HDSL TECHNOLOGY

TRANSMISSION RANGES

FRONT AND REAR PANEL COMPONENTS

Table 6. WorldDSL Product Compatibility

SPECIFICATIONS

FUNCTIONAL DESCRIPTION

MAJOR COMPONENTS

G.703 Interface

HDSL Interface

System Timing Circuits

Processor

Power Sour ces

RATE SELECTABLE APPLICATION MODES AND OPTIONS

Single Mode

Structured Mode

Unstructured Mode

G.704 Framing and Rate Selectable HDSL

HOT SWAPPING

PERFORMANCE MONITORING AND HISTORY

ALARMS

LOOPBACKS

BER TESTING

Inspection, Safety, and Equipment Repair 700-701-100-02

INSPECTION

SAFETY

EQUIPMENT REPAIR

700-701-100-02 Installation and Startup

UTU-701C LINE UNIT INSTALLATION

ETU-751C DESKTOP UNIT INSTALLATION

HDSL STARTUP AND SYNCHRONIZATION

SYSTEM CONFIGURATION

MAINTENANCE TERMINAL CONNECTION

MODEM CONNECTION

LOGGING ON

CONSOLE SCREEN STRUCTURE

READING AND NAVIGATING MENUS

Config Menu Options

Configure Terminal Settings

Configure Date and Time

Change Password

Configure Circuit ID

Configure System Settings

Configure LTU and NTU Interfaces

Configure Alarms

Alarms for LTU and NTU Interface

HDSL Span 1 Alarms

Figure 28. Set to Factory Defaults Screen

LOGGING OFF

VIEWING STATUS

Figure 29. Main Console Screen

MONITOR MENU

Monitor LTU Interface Screen

Monitor NTU Interface Screen

Monitor HDSL Span 1 Screen

HISTORY MENU

LTU and NTU Interface Performance History Screens

LTU and NTU Interface Alarm History Screens

HDSL Span Performance History Screens

HDSL Span 1 24 Hour History Screen

7 Day HDSL Span 1 Performance History Screens

HDSL Span 1 Alarm History Screens

Clear History Screens

Figure 42. Inventory Screen

TESTING

Firmware Download Utility 700-701-100-02

Initiate the Download and Navigate the Menus

REFERENCE INFORMATION